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Index: M

class macros

sendmail, 5.3.5. Class Macros
sendmail, 12. Class
sendmail, 32. Class Macros

classes and : sendmail, 12.1.1.1. A caveat

database macros : sendmail, 33. Database Macros

declaring

sendmail, 7.2. Defining Macros
sendmail, 31.2. Command-Line Definitions

defining

sendmail, 19.4.2. Define Macros
sendmail, 20.3. Alphabetized V8.8 Subroutines
sendmail, 36.7. Alphabetized Reference
sendmail, 38.2.1. Define a Macro with .D
with M option : sendmail, 34.8. Alphabetized Reference

dumping : sendmail, 38.3. Dump a Macro

expanding : TCP/IP Network Administration, 10.6.2. Transforming the Address

fetching value of : sendmail, 20.3. Alphabetized V8.8 Subroutines

file class macros : sendmail, 5.3.6. File Class Macros

for compiling sendmail : sendmail, 18.8. Alphabetized Reference

in header fields : sendmail, 35.3.1. Macros in the Header Field

initializing : sendmail, 36.4.2.2. Initialize macros

m4 preprocessor : sendmail, 19. V8 m4 Configuration

naming

sendmail, 5.3.2. Macros
sendmail, 7.2. Defining Macros
sendmail, 31.4. Macro Names
converting names to integers : sendmail, 20.3. Alphabetized V8.8 Subroutines

predefined

sendmail, 7.3. Predefined Macros
sendmail, 31.1. Preassigned Macros

required : sendmail, 31.3.1. Required Macros (V8.6 and earlier)

restoring macro values : sendmail, 23.9. The qf File Internals

in rule set names : sendmail, 29.1.4. Macros in Rule-Set Names

in rules : sendmail, 28.1.1. Macros in Rules

for time and date : sendmail, 31.7.2. Macros and the Date

macvalue() : sendmail, 20.3. Alphabetized V8.8 Subroutines

MAEs (Metropolitan Area Exchanges) : TCP/IP Network Administration, 1.1. TCP/IP and the Internet

magic cookies

DNS & BIND, 6.4.1.2. Using DNS with NIS
Practical UNIX & Internet Security, 17.3.21.4. Using Xauthority magic cookies

magic number

Practical UNIX & Internet Security, 5.1.7. File Permissions in Detail
TCP/IP Network Administration, A.2. The PPP Daemon

mail

(see email)
(see sendmail)

mail addr field : DNS & BIND, 3.2.1. Where in the World Do I Fit?

MAIL command (SMTP)

sendmail, 29.10.1. The check_mail Rule Set
sendmail, 34.8. Alphabetized Reference

Mail Exchanger records : (see MX records)

mail exchangers

DNS & BIND, 5.1. MX Records
DNS & BIND, 5.2. What's a Mail Exchanger, Again?

mail hubs : (see hubs)

/mail/imap.tar.Z file : TCP/IP Network Administration, 9.7.2. IMAP Server

mail program

Practical UNIX & Internet Security, 15.1.3. mail Command
sendmail, 3.2.1. Delivery to a Mailbox

"Mail-From:" header line : sendmail, 35.10. Alphabetized Reference

mail11 program : sendmail, 3.3.3. Other Protocols

Mail_Aliases table (NIS+) : Practical UNIX & Internet Security, 19.5.3. NIS+ Tables

MAIL_HUB macro (m4)

sendmail, 19.6. Alphabetized m4 Macros
sendmail, 31.10. Alphabetized Reference

mailbox file : sendmail, 3.2.1. Delivery to a Mailbox

mailbox servers : TCP/IP Network Administration, 9.7. Mail Servers

synchronizing : TCP/IP Network Administration, 9.7.2. IMAP Server

mailer

definition fields : TCP/IP Network Administration, 10.5.8. Defining Mailers

common : TCP/IP Network Administration, 10.5.8.1. Some common mailer definitions

local : TCP/IP Network Administration, 10.5.8. Defining Mailers

MAILER command (UUCP) : sendmail, 31.10. Alphabetized Reference

MAILER source file (in sendmail)

TCP/IP Network Administration, E.3. m4 sendmail Macros
TCP/IP Network Administration, E.3.5. MAILER
values available, listed : TCP/IP Network Administration, E.3.5. MAILER

MAILER() (m4)

sendmail, 19.3.2. MAILER()
sendmail, 30.3. m4 Configuration Syntax

MAILER-DAEMON alias

sendmail, 3.1.1. The Aliases File
sendmail, 24.4.2. The MAILER-DAEMON Alias
sendmail, 31.10. Alphabetized Reference
(see also $n macro)

mailer= equate (syslog output) : sendmail, 26.1.3.4. mailer= the delivery agent used

MAILER_DEFINITIONS macro (m4) : sendmail, 19.6. Alphabetized m4 Macros

mailertable database

sendmail, 19.6. Alphabetized m4 Macros
TCP/IP Network Administration, 10.7.1. Modifying Local Information

mailing lists

Practical UNIX & Internet Security, E.1. Mailing Lists

Practical UNIX & Internet Security, E.1.3.10. WWW-security

sendmail, 1.3.3. Aliases and Mailing Lists

sendmail, 17.1.2.1. A rule to handle List:;

sendmail, 20.2.2. Workstation Refuses to Act as a Mail Gateway

sendmail, 34.8. Alphabetized Reference

(see also email)

exploder lists : sendmail, 25.4. Exploder Mailing Lists

EXPN command (SMTP) : sendmail, 22.3.2. SMTP vrfy and expn

for distributing security information : TCP/IP Network Administration, 12.1.2.2. Use mailing lists to distribute information

for exchanging information and ideas : TCP/IP Network Administration, 13.5. Mailing Lists

:include: directive

sendmail, 22.5.2. Permissions for :include:
sendmail, 23.9. The qf File Internals
sendmail, 25.2. :include: Mailing Lists

including oneself on : sendmail, 34.8. Alphabetized Reference

internal : sendmail, 25.1. Internal Mailing Lists

joining : TCP/IP Network Administration, 13.5. Mailing Lists

keeping current : Building Internet Firewalls, 12.3.1.1. Mailing lists

list precedence : sendmail, 14.4. Precedence

owner : sendmail, 25.3. Defining a Mailing List Owner

packages for : sendmail, 25.6. Packages That Help

resources via : Building Internet Firewalls, A.3. Mailing Lists

sendmail and : TCP/IP Network Administration, 10.1. sendmail's Function

troubleshooting : sendmail, 25.5. Problems with Mailing Lists

mailq command

sendmail, 4.1.2. Show Queue Mode (-bp)
sendmail, 36.1.2. mailq

mailstats program : sendmail, 26.2.2. Viewing Statistics: mailstats

maintaining firewalls : Building Internet Firewalls, 12. Maintaining Firewalls

maintenance : (see administration)

maintenance data category (logging) : DNS & BIND, 7.5.3. Category Details

maintenance mode : Practical UNIX & Internet Security, C.5.1. Process #1: /etc/init

maintenance personnel : Practical UNIX & Internet Security, 13.3. Outsiders

maintenance toolkits, ready-made : TCP/IP Network Administration, 11.2. Diagnostic Tools

Majordomo package

sendmail, 25.6.1. Majordomo
TCP/IP Network Administration, 13.5. Mailing Lists

make command

sendmail, 2.5. Build
TCP/IP Network Administration, 5.2. Linux Kernel Configuration
in NIS : TCP/IP Network Administration, 9.3. Network Information Service
make config command : TCP/IP Network Administration, 5.2. Linux Kernel Configuration
make install.man : TCP/IP Network Administration, 9.4. A BOOTP Server
make zImage command : TCP/IP Network Administration, 5.2. Linux Kernel Configuration

makedbm program : Practical UNIX & Internet Security, 19.4.4.1. Setting up netgroups

Makefile file

DNS & BIND, 6.4.1.2. Using DNS with NIS
sendmail, 2.4. Preliminaries
sendmail, 18.4. Tuning Makefile
db library package : sendmail, C.2. Get the Source

makemap command

sendmail, 33.2. Create Files with makemap
TCP/IP Network Administration, 10.4.1.1. Building a sendmail.cf with m4 macros
TCP/IP Network Administration, E.1. Compiling sendmail
TCP/IP Network Administration, E.4.4. The sendmail K Command

makesendmail script

sendmail, 2.4. Preliminaries
sendmail, 18.3.2. The makesendmail Script
sendmail, 18.6. Install sendmail

"malformed response" message : DNS & BIND, 7.6.1. Common Syslog Messages

malware : Practical UNIX & Internet Security, 11.1. Programmed Threats: Definitions

man pages : Practical UNIX & Internet Security, 2.5. The Problem with Security Through Obscurity

man-in-the-middle forgery : Building Internet Firewalls, 6.6.1. Risks of Filtering by Source

Management Information Base (MIB) : TCP/IP Network Administration, 11.9. Simple Network Management Protocol

management tools : Building Internet Firewalls, 2.10. Network Management Services

management, role of

Practical UNIX & Internet Security, 2.3.4. Convincing Management
Practical UNIX & Internet Security, 2.5. The Problem with Security Through Obscurity

managing accounts : Building Internet Firewalls, 12.1.2. Managing Your Accounts

MANs (Metropolitan Networks) : Practical UNIX & Internet Security, 16.1. Networking

manual logging

Practical UNIX & Internet Security, 10.7. Handwritten Logs
Practical UNIX & Internet Security, 10.7.2.2. Informational material

manual pages : Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs

manual sendmail use : sendmail, 1.4. Run sendmail by Hand

many-answers format : DNS & BIND, 10.4.1.4. More efficient zone transfers

map : TCP/IP Network Administration, 1.7. Application Layer

/etc/hosts file

Practical UNIX & Internet Security, 16.2.3.1. The /etc/hosts file
sendmail, 7.3.1. The hostname
sendmail, 18.8. Alphabetized Reference
sendmail, 34.8. Alphabetized Reference
TCP/IP Network Administration, 3.2. The Host Table
TCP/IP Network Administration, 6.1. The ifconfig Command
TCP/IP Network Administration, 7.3. Building a Static Routing Table
TCP/IP Network Administration, 9.1.4. NFS Automounter
TCP/IP Network Administration, 9.3. Network Information Service
creating : TCP/IP Network Administration, 3.2. The Host Table
as maps : TCP/IP Network Administration, 3.3.5. Network Information Service
modifying : TCP/IP Network Administration, 3.3.4. BIND, resolver, and named

/etc/networks file

TCP/IP Network Administration, 3.2. The Host Table

TCP/IP Network Administration, 6.1.3. Assigning a Subnet Mask

TCP/IP Network Administration, 7.3. Building a Static Routing Table

TCP/IP Network Administration, 9.3. Network Information Service

as maps

TCP/IP Network Administration, 3.3.5. Network Information Service
(see also automounter daemon)
(see also IMAP)
(see also Network Information Service)
(see also portmapper)

building : TCP/IP Network Administration, 7.4.3. Open Shortest Path First

name assigned a database : TCP/IP Network Administration, 10.6.2.1. Transforming with a database

NIS : (see NIS)

/map rule-testing command : sendmail, 38.5.3. Look up a Database Item with /map

map_lookup() : sendmail, 20.3. Alphabetized V8.8 Subroutines

mapping : DNS & BIND, 4.2. Setting Up DNS Data

addresses to names

DNS & BIND, 2.6.4. Mapping Addresses to Names
DNS & BIND, 4.2.6. PTR Records

h2n utility for : (see h2n utility)

names to addresses : DNS & BIND, 4.2.5. Address and Alias Records

network names and numbers : DNS & BIND, 15.6. Network Names and Numbers

martians

TCP/IP Network Administration, 4.2.1. Obtaining an IP Address
TCP/IP Network Administration, B.7. Definition Statements

mask information : (see information)

masking

TCP/IP Network Administration, 2.2.2. Classless IP Addresses
TCP/IP Network Administration, 2.3. Subnets

MASQUERADE_AS macro (m4)

sendmail, 19.6. Alphabetized m4 Macros
sendmail, 31.10. Alphabetized Reference

MASQUERADE_DOMAIN macro (m4) : sendmail, 19.6. Alphabetized m4 Macros

MASQUERADE_DOMAIN_FILE macro (m4) : sendmail, 19.6. Alphabetized m4 Macros

masquerade_entire_domain feature : sendmail, 19.6. Alphabetized m4 Macros

masquerade_envelope feature : sendmail, 19.6. Alphabetized m4 Macros

masquerading

sendmail, 19.4.4. Masquerading
sendmail, 19.6. Alphabetized m4 Macros
TCP/IP Network Administration, E.3.2. FEATURE
TCP/IP Network Administration, E.3.4. DOMAIN

Massey, James L. : Practical UNIX & Internet Security, 6.4.1. Summary of Private Key Systems

master files : (see db files)

Master mode (uucico) : Practical UNIX & Internet Security, 15.1.4. How the UUCP Commands Work

master server

Practical UNIX & Internet Security, 19.4. Sun's Network Information Service (NIS)
(see also NIS)

master servers : (see primary name server)

"master unreachable" message : DNS & BIND, 7.6.1. Common Syslog Messages

"master zone loaded" message : DNS & BIND, 7.6.1. Common Syslog Messages

MatchGecos (G) option

sendmail, 20.1.2. Global Variables
sendmail, 34.8. Alphabetized Reference

MATCHGECOS macro : sendmail, 18.8. Alphabetized Reference

matching : (see wildcard operators)

MAX... macros : sendmail, 18.8. Alphabetized Reference

MaxDaemonChildren option

sendmail, 34.1.3. Appropriateness of Options
sendmail, 34.8. Alphabetized Reference

MaxHopCount (h) option : sendmail, 34.8. Alphabetized Reference

maximum line length

sendmail, 30.4. The Equates
sendmail, 30.8. Alphabetized F= Flags

maximum receive unit (MRU) : TCP/IP Network Administration, A.2. The PPP Daemon

maximum transmission unit (MTU)

Building Internet Firewalls, C.5.1.3. Fragmenting datagrams
TCP/IP Network Administration, 1.5.1.3. Fragmenting datagrams
TCP/IP Network Administration, 6.1.1. Determining the Interface Name
TCP/IP Network Administration, 6.1.2. Checking the Interface with ifconfig
TCP/IP Network Administration, 6.1.5.4. Maximum transmission unit
TCP/IP Network Administration, A.1. Dial-Up IP
determining smallest : TCP/IP Network Administration, 5.2. Linux Kernel Configuration

MAXLINE variable : sendmail, 18.8. Alphabetized Reference

MaxMessageSize : sendmail, 34.8. Alphabetized Reference

maxpacketsize : TCP/IP Network Administration, B.8.6. The egp Statement

MaxQueueRunSize option

sendmail, 23.4. Printing the Queue
sendmail, 34.8. Alphabetized Reference

MAXRWSETS variable : sendmail, 29.1.2. Rule-Set Names

MB records

DNS & BIND, 3.2.1. Where in the World Do I Fit?
DNS & BIND, A.1.2.4. MB mailbox domain name - experimental

MBONE (Multicast Backbone)

Building Internet Firewalls, 2.8. Real-Time Conferencing
TCP/IP Network Administration, 5.2. Linux Kernel Configuration
TCP/IP Network Administration, 5.3.1.1. Options
configuring : Building Internet Firewalls, 8.9.3. The Multicast Backbone (MBONE)

mc files

sendmail, 19.3. The Minimal mc File
sendmail, 19.6. Alphabetized m4 Macros

MCERT : Practical UNIX & Internet Security, F.3.4.21. Motorola, Inc.

MCI Corporation : Practical UNIX & Internet Security, F.3.4.19. MCI Corporation

MD and MF records

DNS & BIND, 5.1. MX Records
DNS & BIND, A.1.2.5. MD mail destination - obsolete

MD2 algorithm : Practical UNIX & Internet Security, 6.5.4.1. MD2, MD4, and MD5

MD4 algorithm

Building Internet Firewalls, 10.3.1. One-Time Passwords
Practical UNIX & Internet Security, 6.5.4.1. MD2, MD4, and MD5

MD5 algorithm

Practical UNIX & Internet Security, 6.5.2. Using Message Digests
Practical UNIX & Internet Security, 6.5.4.1. MD2, MD4, and MD5
Practical UNIX & Internet Security, 23.5.1. Use Message Digests for Storing Passwords
Practical UNIX & Internet Security, 23.9. A Good Random Seed
digital signatures versus : Practical UNIX & Internet Security, 6.6.3.6. PGP detached signatures
in POP : Practical UNIX & Internet Security, 17.3.10. Post Office Protocol (POP) (TCP Ports

MDAs (mail delivery agents) : (see MTAs)

media : Practical UNIX & Internet Security, 12.3.3. Other Media

damaged by smoke : Practical UNIX & Internet Security, 12.2.1.2. Smoke
destroying : Practical UNIX & Internet Security, 12.3.2.3. Sanitize your media before disposal
failure of : Practical UNIX & Internet Security, 7.1.4. Guarding Against Media Failure
hard/soft disk quotas : Practical UNIX & Internet Security, 25.2.2.5. Using quotas
print through process : Practical UNIX & Internet Security, 12.3.2.1. Verify your backups
rotating for backups : Practical UNIX & Internet Security, 7.1.3. Types of Backups
rotation of : Practical UNIX & Internet Security, 7.2.1.2. Media rotation
sanitizing : Practical UNIX & Internet Security, 12.3.2.3. Sanitize your media before disposal
viruses from : Practical UNIX & Internet Security, 11.1.5. Viruses

meet-in-the-middle attacks : Practical UNIX & Internet Security, 6.4.5.1. Double DES

MEMCHUNKSIZE macro : sendmail, 18.8. Alphabetized Reference

memory

DNS & BIND, 8.1.2. Capacity Planning

Building Internet Firewalls, 1.1.2. Your Resources

Building Internet Firewalls, 5.3.3. What Hardware Configuration?

Practical UNIX & Internet Security, 25.2.2. Disk Attacks

Practical UNIX & Internet Security, 25.2.2.8. Tree-structure attacks

sendmail, 34.8. Alphabetized Reference

data segment size : DNS & BIND, 10.4.2.1. Changing the data segment size limit

domain name storage : DNS & BIND, 14.2.2. Domain Name Storage

hidden space : Practical UNIX & Internet Security, 25.2.2.7. Hidden space

for logs

Building Internet Firewalls, 12.1.3. Managing Your Disk Space
Building Internet Firewalls, 12.2.2. What Should You Watch For?

managing : Building Internet Firewalls, 12.1.3. Managing Your Disk Space

reserved space : Practical UNIX & Internet Security, 25.2.2.6. Reserved space

resource limits : DNS & BIND, 10.4.2. Resource Limits

swap space : Practical UNIX & Internet Security, 25.2.3. Swap Space Problems

/tmp directory and : Practical UNIX & Internet Security, 25.2.4. /tmp Problems

tree-structure attacks : Practical UNIX & Internet Security, 25.2.2.8. Tree-structure attacks

memory-to-memory copies : TCP/IP Network Administration, 6.1.5.2. ARP and trailers

merging interior and exterior routers : Building Internet Firewalls, 4.3.2. It's OK to Merge the Interior Router and the Exterior Router

Merkle, Ralph : Practical UNIX & Internet Security, 6.4.5.1. Double DES

Message Authentication Code (MAC) : Practical UNIX & Internet Security, 6.5.5.2. Message authentication codes

Message Digest 5 (MD5) cryptographic checksum

TCP/IP Network Administration, 7.4.3. Open Shortest Path First
TCP/IP Network Administration, 7.7.1.1. A host configuration
TCP/IP Network Administration, B.8.2. The rip Statement

message digests

Practical UNIX & Internet Security, 6.5. Message Digests and Digital Signatures

Practical UNIX & Internet Security, 6.5.2. Using Message Digests

Practical UNIX & Internet Security, 9.2.3. Checksums and Signatures

Practical UNIX & Internet Security, 23.5.1. Use Message Digests for Storing Passwords

Tripwire package

Practical UNIX & Internet Security, 9.2.4. Tripwire
Practical UNIX & Internet Security, 9.2.4.2. Running Tripwire

"Message:" header line : sendmail, 35.10. Alphabetized Reference

message queue : (see queue)

"Message-ID:" header line

sendmail, 1.5. The Header
sendmail, 13.4. Sending Mail
sendmail, 14.2.3. The Message-ID: Header
sendmail, 26.1.3.5. msgid= the Message-ID: identifier
sendmail, 30.8. Alphabetized F= Flags
sendmail, 35.5.16. Replacing Headers with H_ACHECK
sendmail, 35.10. Alphabetized Reference

message_volume.sh script : sendmail, 26.1.4.1. message_volume.sh

messages

compression : DNS & BIND, A.4.1.2. Message compression
format of : DNS & BIND, A.2. DNS Message

messages file : TCP/IP Network Administration, 12.4.2.2. Checking login activity

messages log file : Practical UNIX & Internet Security, 10.2.3. messages Log File

messages, email

sendmail, 34.8. Alphabetized Reference

TCP/IP Network Administration, 1.3. TCP/IP Protocol Architecture

TCP/IP Network Administration, 1.5.2. Internet Control Message Protocol

assigning priority to : TCP/IP Network Administration, 10.5.6. Defining Mail Precedence

blank lines ending : sendmail, 30.8. Alphabetized F= Flags

body of

sendmail, 1.6. The Body
sendmail, 23.2.2. The Data (Message Body) File: df
(see also -B switch (sendmail))

bouncing

sendmail, 10.3. Missing Addresses
sendmail, 13.2.2. Limit the Life of Queued Messages
sendmail, 14.4. Precedence
sendmail, 19.6. Alphabetized m4 Macros
sendmail, 22.8.3.4. The PostmasterCopy option
sendmail, 23.3.6. Savemail Panic
sendmail, 23.7.1. Handling a Down Site
sendmail, 24.4.1. The Postmaster Alias
sendmail, 25.5.1. Reply Versus Bounce
sendmail, 25.5.3. A list-bounced Alias
sendmail, 34.8. Alphabetized Reference
sendmail, 35.10. Alphabetized Reference
sendmail, 36.7. Alphabetized Reference
(see also $n macro)

content type : TCP/IP Network Administration, 3.4.3. Multipurpose Internet Mail Extensions

converting between 7- and 8-bit : sendmail, 18.8. Alphabetized Reference

delivering : (see delivery)

encapsulated : TCP/IP Network Administration, 3.4.3. Multipurpose Internet Mail Extensions

envelope : (see envelope)

error : (see errors)

flooding : Practical UNIX & Internet Security, 25.3.2. Message Flooding

forged : sendmail, 22.7. Forged Mail

forwarding : sendmail, 35.7. Forwarding with Resent-Headers

forwarding loops : sendmail, 25.7.2. Forwarding Loops

headers for : (see headers, message)

holding : (see queue)

hop count : (see hop count)

hub's acceptance of : sendmail, 15.4. Hub Accepts Mail for Client

leading dots in : sendmail, 34.8. Alphabetized Reference

limiting size of : sendmail, 20.2.3. Limit the Size of Guest Messages

multipart subtype : TCP/IP Network Administration, 3.4.3. Multipurpose Internet Mail Extensions

multiple objects in single : TCP/IP Network Administration, 3.4.3. Multipurpose Internet Mail Extensions

origin date of : (see $a macro)

priority of

sendmail, 14.4. Precedence
(see priority, message)

processing limits on : sendmail, 23.5. How the Queue Is Processed

queue

sendmail, 1.3.2. The Queue

sendmail, 23. The Queue

checkpointing : sendmail, 34.8. Alphabetized Reference

down sites and : sendmail, 23.7.1. Handling a Down Site

lifetime

sendmail, 13.2.2. Limit the Life of Queued Messages
sendmail, 34.8. Alphabetized Reference

message life : sendmail, 13.2.2. Limit the Life of Queued Messages

message parts : sendmail, 23.2. Parts of a Queued Message

printing

sendmail, 4.1.2. Show Queue Mode (-bp)
sendmail, 23.2.3.2. Locks shown when printing the queue
sendmail, 23.4. Printing the Queue
sendmail, 36.7. Alphabetized Reference

processing

sendmail, 23.5. How the Queue Is Processed
sendmail, 23.9. The qf File Internals
sendmail, 36.7. Alphabetized Reference

putting everything in : sendmail, 34.8. Alphabetized Reference

requeuing on error : sendmail, 25.7.6. Force Requeue on Error

sendmail options for : sendmail, 34.6.2. The Queue

sorting : sendmail, 34.8. Alphabetized Reference

time message placed in : sendmail, 23.9. The qf File Internals

troubleshooting : sendmail, 23.8. Pitfalls

why message is stored in : sendmail, 23.9. The qf File Internals

rejecting

sendmail, 18.8. Alphabetized Reference
sendmail, 20.2.6. Reject Mail from Spamming or Mail-bombing Sites

relays for : sendmail, 19.4.5. Relays

sending

sendmail, 13.4. Sending Mail
sendmail, 14.5. Sending Real Mail

size of

sendmail, 26.1.3.10. size= the size of the message
sendmail, 30.4. The Equates
sendmail, 34.8. Alphabetized Reference

stored in queue in error : sendmail, 23.9. The qf File Internals

time placed in queue : sendmail, 23.9. The qf File Internals

unique identifier for

sendmail, 13.4. Sending Mail
sendmail, 14.2.3. The Message-ID: Header
sendmail, 26.1.3.5. msgid= the Message-ID: identifier

messages, error : (see error messages)

messages, SMTP greeting

sendmail, 31.10. Alphabetized Reference
sendmail, 34.8. Alphabetized Reference

messages, warning : (see warning messages)

meta characters : Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs

meta-packets, and filtering : Building Internet Firewalls, 6.8.4. It Should Allow Rules Based on Any

metadata

Practical UNIX & Internet Security, 9.2.2. Checklists and Metadata
Practical UNIX & Internet Security, 9.2.2.2. Ancestor directories

metasymbols : TCP/IP Network Administration, 10.6.1. Pattern Matching

for transforming the address : TCP/IP Network Administration, 10.6.2. Transforming the Address

MeToo (m) option

sendmail, 34.8. Alphabetized Reference
sendmail, 36.7. Alphabetized Reference

metrics : TCP/IP Network Administration, 6.1.5.3. Metric

arbitrariness of : TCP/IP Network Administration, 7.4.1.1. Running RIP with routed
incompatibility of : TCP/IP Network Administration, 7.6.1. gated's Preference Value

Metropolitan Area Exchanges (MAEs) : TCP/IP Network Administration, 1.1. TCP/IP and the Internet

Metropolitan Networks (MANs) : Practical UNIX & Internet Security, 16.1. Networking

MG records

DNS & BIND, 3.2.1. Where in the World Do I Fit?
DNS & BIND, A.1.2.7. MG mail group member - experimental

MH (mail handler) : Practical UNIX & Internet Security, 11.5.2.5. .forward, .procmailrc

MIB (Management Information Base) : TCP/IP Network Administration, 11.9. Simple Network Management Protocol

MIBI and MIBII : TCP/IP Network Administration, 11.9. Simple Network Management Protocol

Micro-BIT Virus Center : Practical UNIX & Internet Security, F.3.4.16. Germany: Southern area

Microsoft Windows 95 : DNS & BIND, 6.4.9. Windows 95

Microsoft Windows NT : DNS & BIND, 6.4.10. Windows NT

mil domain

DNS & BIND, 2.2.1. Top-Level Domains
TCP/IP Network Administration, 3.3.1. The Domain Hierarchy

Miller, Barton : Practical UNIX & Internet Security, 23.1.2. An Empirical Study of the Reliability of UNIX Utilities

MILNET : Practical UNIX & Internet Security, F.3.4.20. Motorola, Inc.

MIME (Multipurpose Internet Mail Extensions)

Building Internet Firewalls, 8.1.3. Multipurpose Internet Mail Extensions
Practical UNIX & Internet Security, 11.1.5. Viruses
sendmail, 5.3.8. Headers
TCP/IP Network Administration, 1.2. A Data Communications Model
TCP/IP Network Administration, 3.4.3. Multipurpose Internet Mail Extensions
format errors : sendmail, 34.8. Alphabetized Reference
headers for : sendmail, 35.6.7. MIME Headers
sendmail and : TCP/IP Network Administration, 10.5.8. Defining Mailers
standardizing on : TCP/IP Network Administration, 4.5.3. Planning Your Mail System
types : TCP/IP Network Administration, 3.4.3. Multipurpose Internet Mail Extensions

"MIME-Version:" header line : sendmail, 35.10. Alphabetized Reference

MIME7TO8 macro : sendmail, 18.8. Alphabetized Reference

MIME8TO7 macro : sendmail, 18.8. Alphabetized Reference

MINFO records : DNS & BIND, A.1.2.8. MINFO mailbox or mail list information - experimental

MinFreeBlocks (b) option : sendmail, 34.8. Alphabetized Reference

minicom : TCP/IP Network Administration, 6.4.4. Troubleshooting Serial Connections

minimum matching

sendmail, 8.7.2. Minimal Matching
sendmail, 28.5.1. Minimum Matching
sendmail, 32.2.3. Backup and Retry

minimum TTL : DNS & BIND, 8.4.1. Changing Other SOA Values

MinQueueAge option

sendmail, 23.9. The qf File Internals
sendmail, 34.8. Alphabetized Reference

minus sign (hyphen)

in machine conversation : sendmail, 4.2. Verbose (-v)
non-equivalent host : TCP/IP Network Administration, 12.2.5. Secure the r Commands

mirrored servers : DNS & BIND, 10.12. Load Sharing Between Mirrored Servers

missing

addresses : (see addresses, null)

cache data : DNS & BIND, 13.3.7. 7. Missing Cache Data

PTR records

DNS & BIND, 11.7.3. No PTR Data for Name Server's Address
DNS & BIND, 13.3.4. 4. Added Name to Database File, but Forgot to Add PTR Record

subdomain delegation : DNS & BIND, 13.3.9. 9. Missing Subdomain Delegation

"Missing username" error : sendmail, 9.4. The error Delivery Agent

MIT-KERBEROS-5 authentication : Practical UNIX & Internet Security, 17.3.21.3. The xhost facility

Mitnick, Kevin : Practical UNIX & Internet Security, 27.2.6. Network Providers that Network Too Well

mixed multipart subtype : TCP/IP Network Administration, 3.4.3. Multipurpose Internet Mail Extensions

mknod command : TCP/IP Network Administration, 6.4.4. Troubleshooting Serial Connections

mkpasswd program : Practical UNIX & Internet Security, 8.8.4. Password Generators

mktemp function : Practical UNIX & Internet Security, 23.2. Tips on Avoiding Security-related Bugs

mobile network computing : Practical UNIX & Internet Security, 8.7. One-Time Passwords

mobile systems, requirements of : TCP/IP Network Administration, 3.6.1. Dynamic Host Configuration Protocol

Mockapetris, Paul

DNS & BIND, 1.2.1. The History of the Domain Name System
DNS & BIND, 1.4. The History of BIND
DNS & BIND, A. DNS Message Format and Resource Records

mode command : TCP/IP Network Administration, 6.3.2. Dial-Up PPP

modem pools : Building Internet Firewalls, 10.6. Terminal Servers and Modem Pools

modems

Practical UNIX & Internet Security, 14. Telephone Security

Practical UNIX & Internet Security, 14.6. Additional Security for Modems

TCP/IP Network Administration, 1.7. Application Layer

(see also Automatic Call Unit)

asynchronous : TCP/IP Network Administration, 5.3.1.2. Pseudo-device

callback setups

Practical UNIX & Internet Security, 14.4.2.
Practical UNIX & Internet Security, 14.6. Additional Security for Modems

carrier-detect (DCD) indicator, monitoring : TCP/IP Network Administration, 6.3.3. chat

checking configuration of : TCP/IP Network Administration, 6.4.4. Troubleshooting Serial Connections

clogging : Practical UNIX & Internet Security, 25.3.4. Clogging

documentation : TCP/IP Network Administration, 6.4.4. Troubleshooting Serial Connections

encrypting : Practical UNIX & Internet Security, 14.6. Additional Security for Modems

hanging up : (see signals)

high-speed dial-up : TCP/IP Network Administration, 6.2. TCP/IP Over a Serial Line

physical security of

Practical UNIX & Internet Security, 14.5.4. Physical Protection of Modems
Practical UNIX & Internet Security, 14.6. Additional Security for Modems

recording call information : Practical UNIX & Internet Security, 10.3.1. aculog File

synchronous : TCP/IP Network Administration, 5.3.1.2. Pseudo-device

tracing connections

Practical UNIX & Internet Security, 24.2.4. Tracing a Connection
Practical UNIX & Internet Security, 24.2.4.2. How to contact the system administrator of a computer

UNIX and

Practical UNIX & Internet Security, 14.5. Modems and UNIX
Practical UNIX & Internet Security, 14.5.3.3. Privilege testing

modes

daemon : sendmail, 4.1.1. Daemon Mode (-bd)

delivery : sendmail, 13.2.3. The Default Delivery Mode

sendmail operating : sendmail, 36.7. Alphabetized Reference

TempFileMode option

sendmail, 13.2.4. The Default File Permissions
sendmail, 22.8.3.7. The TempFileMode option

modification times

Practical UNIX & Internet Security, 5.1.2. Inodes
Practical UNIX & Internet Security, 5.1.5. File Times
Practical UNIX & Internet Security, 7.4.7. inode Modification Times
Practical UNIX & Internet Security, 9.2.2. Checklists and Metadata

modifying Internet services : Building Internet Firewalls, 5.8.3. Installing and Modifying Services

modules, loadable : TCP/IP Network Administration, 5.2. Linux Kernel Configuration

monitoring

automatically : Building Internet Firewalls, 5.9.2. Consider Writing Software to Automate Monitoring

hardware for : (see detectors)

intruders : Practical UNIX & Internet Security, 24.2.3. Monitoring the Intruder

name servers

DNS & BIND, 7.6. Keeping Everything Running Smoothly
(see also administration; performance)
Practical UNIX & Internet Security, 13.2.3. Performance Reviews and Monitoring

security : (see logs/logging)

software

TCP/IP Network Administration, 11.9. Simple Network Management Protocol
TCP/IP Network Administration, 12.4.3. Automated Monitoring

system usage

Building Internet Firewalls, 12.2. Monitoring Your System
TCP/IP Network Administration, 5.2. Linux Kernel Configuration

users : Practical UNIX & Internet Security, 26.2.6. Other Tips

monitors and screen savers : Practical UNIX & Internet Security, 12.3.5.2. X screen savers

more command : TCP/IP Network Administration, 8.4. Using nslookup

Morris worm : Building Internet Firewalls, 8.1. Electronic Mail

Morris, Robert T.

Practical UNIX & Internet Security, 1. Introduction
Practical UNIX & Internet Security, 8.6. The UNIX Encrypted Password System
Practical UNIX & Internet Security, 17.4. Security Implications of Network Services

Mosaic

Building Internet Firewalls, 2.5. The World Wide Web
TCP/IP Network Administration, 13.1. The World Wide Web

motd file : Practical UNIX & Internet Security, 26.2.6. Other Tips

Motorola, Inc. : Practical UNIX & Internet Security, F.3.4.20. Motorola, Inc.

mount command

Practical UNIX & Internet Security, 5.5.5. Turning Off SUID and SGID in Mounted Filesystems
Practical UNIX & Internet Security, 20.3. Client-Side NFS Security
TCP/IP Network Administration, 9.1.3.1. The mount command

mount daemon (mountd)

Building Internet Firewalls, 5.8.2.4. Which services should you disable?
TCP/IP Network Administration, 9.1.1. NFS Daemons

mount point : TCP/IP Network Administration, 9.1.3.1. The mount command

mounted filesystems

Building Internet Firewalls, 5.8.4.3. Mount filesystems as read-only
Practical UNIX & Internet Security, 5.5.5. Turning Off SUID and SGID in Mounted Filesystems
TCP/IP Network Administration, 9.1.3. Mounting Remote Filesystems
(see also directories)

mounting directory : TCP/IP Network Administration, 9.1. The Network File System

mpeg video subtype : TCP/IP Network Administration, 3.4.3. Multipurpose Internet Mail Extensions

mqueue directory : (see queue directory)

mqueue temporary files : TCP/IP Network Administration, 10.5.4. The Set Option Command

MR records : DNS & BIND, A.1.2.9. MR mail rename - experimental

mrand48 function : Practical UNIX & Internet Security, 23.7.3. drand48 ( ), lrand48 ( ), and mrand48 ( )

mrouter

Building Internet Firewalls, 6.3.3.5. IP over IP
Building Internet Firewalls, 8.9.3. The Multicast Backbone (MBONE)

MRU (maximum receive unit) : TCP/IP Network Administration, A.2. The PPP Daemon

${ms} macro : sendmail, D.1. Sun Enhancements

msgid= equate (syslog output) : sendmail, 26.1.3.5. msgid= the Message-ID: identifier

MTAs

Building Internet Firewalls, 8.1. Electronic Mail

sendmail, 1.1. MUA Versus MTA

sendmail, 5.3.1. Mail Delivery Agents

sendmail, 6.2. Define a Mail Delivery Agent

sendmail, 30. Delivery Agents

(see also M configuration command)

$# operator and

sendmail, 9.2.1. The Delivery Agent ($#)
sendmail, 28.6.5. Specify a Delivery Agent: $#

advantages to sendmail : sendmail, 18.1. To Use or Not to Use

choosing

sendmail, 9. Rule Set 0
sendmail, 9.5. Things to Try

declaring : sendmail, 19.3.2. MAILER()

default : sendmail, 34.8. Alphabetized Reference

equates for : sendmail, 30.4. The Equates

for errors : sendmail, 9.4. The error Delivery Agent

expensive

sendmail, 23.6.1. Periodically with -q
sendmail, 30.8. Alphabetized F= Flags
sendmail, 34.8. Alphabetized Reference

flags

sendmail, 6.3. The local Delivery Agent
sendmail, 6.4. Add the Missing Parts to Mhub
sendmail, 14.2. Headers Versus Delivery Agent Flags
sendmail, 30.8. Alphabetized F= Flags
sendmail, 35.4. ?flags? in Header Definitions

ignoring MX records : sendmail, 21.3.5. What? They Ignore MX Records?

local

sendmail, 6.3. The local Delivery Agent
sendmail, 19.6. Alphabetized m4 Macros

logging : sendmail, 26.1.3.4. mailer= the delivery agent used

printing list of : sendmail, 38.4.2. Show Delivery Agents with =M

as recipients : sendmail, 30.8. Alphabetized F= Flags

scripts via : sendmail, 24.3. Write a Delivery Agent Script

statistics : (see statistics)

symbolic name : sendmail, 30.2. The Symbolic Name

testing : sendmail, 38.5.6. Try a Delivery Agent with /try

UUCP : sendmail, 19.4.6. UUCP

mtime

Practical UNIX & Internet Security, 5.1.2. Inodes
Practical UNIX & Internet Security, 5.1.5. File Times
Practical UNIX & Internet Security, 9.2.2. Checklists and Metadata
Practical UNIX & Internet Security, 24.4.1.6. Changes to startup files

MTU (maximum transmission unit)

Building Internet Firewalls, C.5.1.3. Fragmenting datagrams
TCP/IP Network Administration, 1.5.1.3. Fragmenting datagrams
TCP/IP Network Administration, 6.1.1. Determining the Interface Name
TCP/IP Network Administration, 6.1.2. Checking the Interface with ifconfig
TCP/IP Network Administration, 6.1.5.4. Maximum transmission unit
TCP/IP Network Administration, A.1. Dial-Up IP
determining smallest : TCP/IP Network Administration, 5.2. Linux Kernel Configuration

MUAs (mail user agents)

sendmail, 1.1. MUA Versus MTA
sendmail, 36.7. Alphabetized Reference
(see also delivery agents)

MUDs (Multiuser Dungeons) : Practical UNIX & Internet Security, 17.3.23. Other TCP Ports: MUDs and Internet Relay Chat (IRC)

Muffet, Alec : Practical UNIX & Internet Security, 10.5.3.1. Beware false log entries

Multicast Backbone : (see MBONE)

multicast groups : Practical UNIX & Internet Security, 16.2.1.2. Classical network addresses

multicast IP : Building Internet Firewalls, 6.3.3.5. IP over IP

multicasting

Building Internet Firewalls, 8.9.3. The Multicast Backbone (MBONE)

TCP/IP Network Administration, 6.1.2. Checking the Interface with ifconfig

TCP/IP Network Administration, 6.1.5.5. Point-to-point

addresses

TCP/IP Network Administration, 2.2.1. Address Classes
TCP/IP Network Administration, 2.2.2.1. Final notes on IP addresses
TCP/IP Network Administration, 2.6. Address Resolution
TCP/IP Network Administration, 7.4.2. RIP Version 2

routing, support for

TCP/IP Network Administration, 5.2. Linux Kernel Configuration
TCP/IP Network Administration, 5.3.1.1. Options

Multichannel Memorandum Distribution Facility (MMDF) : TCP/IP Network Administration, 10. sendmail

multicharacter

names : (see names)
options : (see options, sendmail)

MULTICS (Multiplexed Information and Computing Service) : Practical UNIX & Internet Security, 1.3. History of UNIX

multidirectional connections : Building Internet Firewalls, 7.4.2. Unidirectional Versus Multidirectional

multihomed

hosts

DNS & BIND, 4.2.4. NS Records
DNS & BIND, 4.2.5. Address and Alias Records
DNS & BIND, 10.5. Name Server Address Sorting
Building Internet Firewalls, C.5.1.2. Routing datagrams
TCP/IP Network Administration, 5.3.1.1. Options
TCP/IP Network Administration, 8.2.1. The Resolver Configuration File
architecture of : TCP/IP Network Administration, 12.7. Firewalls

security

Practical UNIX & Internet Security, 1.3. History of UNIX
Practical UNIX & Internet Security, 2.4.4.7. Defend in depth
Practical UNIX & Internet Security, 2.5.3. Final Words: Risk Management Means Common Sense
Practical UNIX & Internet Security, 17.2. Controlling Access to Servers

site : TCP/IP Network Administration, 4.3.1. Obtaining an autonomous system number

multimedia mail : (see email)

multipart content type : TCP/IP Network Administration, 3.4.3. Multipurpose Internet Mail Extensions

multipart encryption : (see encryption)

multipart messages : (see messages)

multiple

recipients : sendmail, 30.8. Alphabetized F= Flags
SMTP connections : sendmail, 34.8. Alphabetized Reference
timeouts : sendmail, 34.8. Alphabetized Reference

multiplexing

TCP/IP Network Administration, 2.1. Addressing, Routing, and Multiplexing
TCP/IP Network Administration, 2.7. Protocols, Ports, and Sockets

Multipurpose Internet Mail Extensions : (see MIME)

multitasking

Practical UNIX & Internet Security, 1.4. Security and UNIX
Practical UNIX & Internet Security, C.1.3.3. Process priority and niceness

multiuser operating systems : Practical UNIX & Internet Security, 1.4. Security and UNIX

multiuser workstations : Practical UNIX & Internet Security, 17.3.21.1. etc/fbtab and /etc/logindevperm

munitions export : Practical UNIX & Internet Security, 26.4.1. Munitions Export

MustQuoteChars option : sendmail, 34.8. Alphabetized Reference

mutual data infection : DNS & BIND, 13.6.8.3. Mutual infection

MX records

DNS & BIND, 5.1. MX Records
DNS & BIND, 15.3. A Limitation of MX Records
DNS & BIND, A.1.2.10. MX mail exchanger
Building Internet Firewalls, 8.10.5.1. Set up a `fake'
Practical UNIX & Internet Security, 17.3.6. Domain Name System (DNS) (TCP and UDP Port 53)
sendmail, 15.3. MX Records
sendmail, 18.8. Alphabetized Reference
sendmail, 21.3. Set Up MX Records
sendmail, 34.8. Alphabetized Reference
sendmail, 38.5.2. Look Up MX Records with /mx
TCP/IP Network Administration, 8.3.2. Standard Resource Records
TCP/IP Network Administration, 8.3.6. The named.hosts File
TCP/IP Network Administration, 8.4. Using nslookup
TCP/IP Network Administration, 10.7.1. Modifying Local Information
TCP/IP Network Administration, C.3.1.4. Mail exchanger record
0 flag : sendmail, 30.8. Alphabetized F= Flags
bestmx database class : sendmail, 33.8. Alphabetized Reference
bestmx_is_local feature : sendmail, 19.6. Alphabetized m4 Macros
email and firewalls : DNS & BIND, 15.4.4.7. Mail from internal hosts to the Internet
fallback MX host : sendmail, 34.8. Alphabetized Reference
ignored by delivery agents : sendmail, 21.3.5. What? They Ignore MX Records?
looking up for addresses : sendmail, 21.2.3. Look Up Addresses for Delivery
offsite hosts : sendmail, 21.5.1. Offsite MX Hosts
performance limitation of : DNS & BIND, 15.3. A Limitation of MX Records
queries statistic : DNS & BIND, 7.6.2. Understanding the BIND Statistics
routing loops : DNS & BIND, 5.3. The MX Algorithm
RT records vs. : DNS & BIND, 15.7.3. X25, ISDN, and RT
sendmail and : DNS & BIND, 6.3.2. Electronic Mail
with wildcards : sendmail, 21.3.4. Wildcard MX Records

/mx rule-testing command : sendmail, 38.5.2. Look Up MX Records with /mx

MYNAME= command : Practical UNIX & Internet Security, 15.5.2. Permissions Commands

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