Table of content

	Table of Contents
	Index
	Reviews
	Reader Reviews
	Errata

sendmail, 3rd Edition
By Bryan  Costales
Publisher	: O'Reilly
Pub Date	: December 2002
ISBN	: 1-56592-839-3
Pages	: 1232
	Copyright
		Dedication
		Preface
			Changes Since the Previous Edition
			Why This Book Is Necessary
			History
			Eric Allman Speaks
			Organization
			Audience and Assumptions
			Unix and sendmail Versions
			Conventions Used in This Handbook
			Additional Sources of Information
			Other Books, Other Problems
			How to Contact Us
			Acknowledgments
		Chapter 1.   Some Basics
			Section 1.1.   Email Basics
			Section 1.2.   Requests for Comments (RFCs)
			Section 1.3.   Email and sendmail
			Section 1.4.   Basic Parts of sendmail
			Section 1.5.   Basic Parts of a Mail Message
			Section 1.6.   Basic Roles of sendmail
			Section 1.7.   Basic Modes of sendmail
			Section 1.8.   The sendmail.cf File
		Part I:   Build and Install
			Chapter 2.   Build and Install sendmail
				Section 2.1.   Vendor Versus Compiling
				Section 2.2.   Obtain the Source
				Section 2.3.   The Build Script
				Section 2.4.   Building with m4
				Section 2.5.   Build sendmail
				Section 2.6.   Install sendmail
				Section 2.7.   Pitfalls
				Section 2.8.   Build m4 Macro Reference
				APPENDDEF( )
				confBEFORE
				confBLDVARIANT
				confBUILDBIN
				confCC
				confCCOPTS
				confCCOPTS_SO
				confCOPY
				confDEPEND_TYPE
				confDEPLIBS
				confDONT_INSTALL_CATMAN
				confEBINDIR
				confENVDEF and conf_prog_ENVDEF
				confFORCE_RMAIL
				confGBIN...
				confHFDIR
				confHFFILE
				confINCDIRS
				confINC...
				confINSTALL
				confINSTALL_RAWMAN
				confLD
				confLDOPTS
				confLDOPTS_SO
				confLIB...
				confLIBDIRS
				confLIBS and conf_prog_LIBS
				confLIBSEARCH
				confLIBSEARCHPATH
				confLN
				confLNOPTS
				confLINKS
				confMAN...
				confMAPDEF
				confMBIN...
				confMSPQOWN
				confMSP_QUEUE_DIR
				confMTCCOPTS
				confMTLDOPTS
				confNO_HELPFILE_INSTALL
				confNO_MAN_BUILD
				confNO_MAN_INSTALL
				confNO_STATISTICS_INSTALL
				confOBJADD
				confOPTIMIZE
				confRANLIB
				confRANLIBOPTS
				confREQUIRE_LIBSM
				confSBINDIR
				confSBINGRP
				confSBINMODE
				confSBINOWN
				confSHAREDLIB...
				confSHELL
				confSM_OS_HEADER
				confSMOBJADD
				confSMSRCADD
				confSONAME
				conf_prog_OBJADD
				conf_prog_SRCADD
				confSRCDIR
				confSTDIOTYPE
				confSTDIR
				confSTFILE
				confSTRIP
				confSTRIPOPTS
				confUBINDIR
				confUBINGRP
				confUBINMODE
				confUBINOWN
				PREPENDDEF( )
			Chapter 3.   Tune sendmail with Compile-Time Macros
				Section 3.1.   Before You Begin, a Checklist
				Section 3.2.   To Port, Tune, or Debug
				Section 3.3.   Pitfalls
				Section 3.4.   Compile-Time Macro Reference
				AUTO_NIS_ALIASES
				BSD4_3
				BSD4_4
				DATA_PROGRESS_TIMEOUT
				DNSMAP
				DSN
				EGD
				ERRLIST_PREDEFINED
				FAST_PID_RECYCLE
				_FFR...
				FORK
				HAS...
				HESIOD
				HES_GETMAILHOST
				IDENTPROTO
				IP_SRCROUTE
				...IS_BROKEN
				LA_TYPE
				LDAPMAP
				LOG
				MATCHGECOS
				MAX...
				MEMCHUNKSIZE
				MILTER
				MIME7TO8
				MIME8TO7
				NAMED_BIND
				MAP_NSD
				MAP_REGEX
				NDBM
				NEED...
				NET...
				NETINFO
				NEWDB
				NIS
				NISPLUS
				NOFTRUNCATE
				NO_GROUP_SET
				NOTUNIX
				_PATH...
				PH_MAP
				PICKY_HELO_CHECK
				PIPELINING
				PSBUFSIZ
				QUEUE
				QUEUESEGSIZE
				REQUIRES_DIR_FSYNC
				SASL
				SCANF
				SECUREWARE
				SFS_TYPE
				SHARE_V1
				SM_...
				SM_HEAP_CHECK
				SM_CONF_SHM
				SMTP
				SMTPDEBUG
				SMTPLINELIM
				SPT_TYPE
				STARTTLS
				SUID_ROOT_FILES_OK
				SYSLOG_BUFSIZE
				SYSTEM5
				TCPWRAPPERS
				TLS_NO_RSA
				TOBUFSIZE
				TTYNAME
				...T
				UDB_DEFAULT_SPEC
				USE_DOUBLE_FORK
				USE_ENVIRON
				USING_NETSCAPE_LDAP
				USERDB
				USESETEUID
				WILDCARD_SHELL
				XDEBUG
			Chapter 4.   Configure sendmail.cf with m4
				Section 4.1.   The m4 Preprocessor
				Section 4.2.   Configure with m4
				Section 4.3.   m4 Macros by Function
				Section 4.4.   Masquerading
				Section 4.5.   Relays
				Section 4.6.   UUCP Support
				Section 4.7.   Pitfalls
				Section 4.8.   Configuration File Feature Reference
				FEATURE(accept_unqualified_senders)
				FEATURE(accept_unresolvable_domains)
				FEATURE(access_db)
				FEATURE(allmasquerade)
				FEATURE(always_add_domain)
				FEATURE(authinfo)
				FEATURE(bestmx_is_local)
				FEATURE(bitdomain)
				FEATURE(blacklist_recipients)
				FEATURE(compat_check)
				FEATURE(delay_checks)
				FEATURE( dnsbl )
				FEATURE(domaintable)
				FEATURE(enhdnsbl)
				FEATURE(generics_entire_domain)
				FEATURE(genericstable)
				FEATURE(ldap_routing)
				FEATURE(limited_masquerade)
				FEATURE(local_lmtp)
				FEATURE(local_no_masquerade)
				FEATURE(local_procmail)
				FEATURE(lookupdotdomain)
				FEATURE(loose_relay_check)
				FEATURE(mailertable)
				FEATURE(masquerade_entire_domain)
				FEATURE(masquerade_envelope)
				FEATURE(msp)
				FEATURE(nocanonify)
				FEATURE(nodns)
				FEATURE(no_default_msa)
				FEATURE(notsticky)
				FEATURE(nouucp)
				FEATURE(nullclient)
				FEATURE(promiscuous_relay)
				FEATURE(preserve_local_plus_detail)
				FEATURE(preserve_luser_host)
				FEATURE(queuegroup)
				FEATURE(rbl)
				FEATURE(redirect)
				FEATURE(relay_based_on_MX)
				FEATURE(relay_entire_domain)
				FEATURE(relay_hosts_only)
				FEATURE(relay_local_from)
				FEATURE(relay_mail_from)
				FEATURE( smrsh )
				FEATURE(stickyhost)
				FEATURE(use_ct_file)
				FEATURE(use_cw_file)
				FEATURE(uucpdomain)
				FEATURE(virtuser_entire_domain)
				FEATURE(virtusertable)
			Chapter 5.   Build and Use Companion Programs
				Section 5.1.   The Build Script
				-A
				-c
				-E
				-f
				-I
				-L
				-M
				-m
				-n
				-O
				-Q
				-S
				-v
				Section 5.2.   The editmap Program
				-C
				-f
				-N
				-q
				-u
				-x
				Section 5.3.   The mail.local Delivery Agent
				-7
				-b
				-d
				-D
				-f
				-h
				-l (lowercase L)
				-r
				Section 5.4.   The mailstats Program
				-c
				-C
				-f
				-o
				-p
				-P
				Section 5.5.   The makemap Program
				-c
				-C
				-d
				-e
				-f
				-l (lowercase L)
				-N
				-o
				-r
				-s
				-t
				-u
				-v
				Section 5.6.   The praliases Program
				-C
				-f
				Section 5.7.   The rmail Delivery Agent
				Section 5.8.   The smrsh Program
				Section 5.9.   The vacation Program
				-a
				-C
				-d
				-f
				-i or -I
				-l (lowercase L)
				-m
				-r
				-s
				-t
				-U
				-x
				-z
				Section 5.10.   Pitfalls
		Part II:   Administration
			Chapter 6.   Tune Performance
				Section 6.1.   Handle Deep Queues
				Section 6.2.   Sidestep Slow Hosts
				Section 6.3.   Deliver to Files
				Section 6.4.   Buffered File I/O
				Section 6.5.   Use Multiple Queues
				Section 6.6.   Condition the Network
				Section 6.7.   Tune the Kernel
				Section 6.8.   Pitfalls
			Chapter 7.   How to Handle spam
				Section 7.1.   The Local_check_ Rule Sets
				Section 7.2.   How DNSBL Works
				Section 7.3.   Check Headers with Rule Sets
				Section 7.4.   Relaying
				Section 7.5.   The access Database
				Section 7.6.   The Milter Library
				Section 7.7.   Pitfalls
			Chapter 8.   Test Rule Sets with -bt
				Section 8.1.   Overview
				Section 8.2.   Configuration Lines
				Section 8.3.   Dump a sendmail Macro or Class
				Section 8.4.   Show an Item
				Section 8.5.   Complex Actions Made Simple
				Section 8.6.   Process-Specified Addresses
				Section 8.7.   Add Debugging for Detail
				Section 8.8.   Batch Rule-Set Testing
				Section 8.9.   Pitfalls
			Chapter 9.   DNS and sendmail
				Section 9.1.   Overview
				Section 9.2.   How sendmail Uses DNS
				Section 9.3.   Set Up MX Records
				Section 9.4.   How to Use nslookup
				Section 9.5.   Prepare for Disaster
				Section 9.6.   Pitfalls
			Chapter 10.   Maintain Security with sendmail
				Section 10.1.   Why root?
				Section 10.2.   The Environment
				Section 10.3.   SMTP Probes
				Section 10.4.   The Configuration File
				Section 10.5.   Permissions
				Section 10.6.   The Aliases File
				Section 10.7.   Forged Mail
				Section 10.8.   Security Features
				Section 10.9.   Support SMTP AUTH
				Section 10.10.   STARTTLS
				Section 10.11.   Other Security Information
				Section 10.12.   Pitfalls
			Chapter 11.   Manage the Queue
				Section 11.1.   Overview of the Queue
				Section 11.2.   Parts of a Queued Message
				Section 11.3.   Using Multiple Queue Directories
				Section 11.4.   Queue Groups (V8.12 and Above)
				Section 11.5.   Bogus qf Files
				Section 11.6.   Printing the Queue
				Section 11.7.   How the Queue Is Processed
				Section 11.8.   Cause Queues to Be Processed
				Section 11.9.   Process Alternate Queues
				Section 11.10.   Pitfalls
				Section 11.11.   The qf File Internals
				A line
				B line
				C line
				d line
				D line
				E line
				F line
				H line
				I line
				K line
				M line
				N line
				P line
				Q line
				r line
				R line
				S line
				T line
				V line
				Z line
				! line
				$ line
				. line
			Chapter 12.   Maintain Aliases
				Section 12.1.   The aliases(5) File
				Section 12.2.   Forms of Alias Delivery
				Section 12.3.   Write a Delivery Agent Script
				Section 12.4.   Special Aliases
				Section 12.5.   The Aliases Database
				Section 12.6.   Prevent Aliasing with -n
				Section 12.7.   Pitfalls
			Chapter 13.   Mailing Lists and ~/.forward
				Section 13.1.   Internal Mailing Lists
				Section 13.2.   :include: Mailing Lists
				Section 13.3.   Defining a Mailing List Owner
				Section 13.4.   Exploder Mailing Lists
				Section 13.5.   Problems with Mailing Lists
				Section 13.6.   Packages That Help
				Section 13.7.   The User 's ~/.forward File
				Section 13.8.   Pitfalls
			Chapter 14.   Signals, Transactions, and Syslog
				Section 14.1.   Signal the Daemon
				SIGTERM
				SIGINT
				SIGKILL
				SIGHUP
				SIGUSR1
				Section 14.2.   Log Transactions with -X
				Section 14.3.   Log with syslog
				Section 14.4.   Pitfalls
				Section 14.5.   Alphabetized syslog Equates
				arg1=
				bodytype=
				class=
				ctladdr=
				daemon=
				delay=
				dsn=
				from=
				intvl=
				len=
				mailer=
				msgid=
				nrcpts=
				ntries=
				pri=
				proto=
				reject=
				relay=
				ruleset=
				size=
				stat=
				to=
				xdelay=
			Chapter 15.   The sendmail Command Line
				Section 15.1.   Alternative argv[0] Names
				Section 15.2.   Command-Line Switches
				Section 15.3.   List of Recipient Addresses
				Section 15.4.   Processing the Command Line
				Section 15.5.   sendmail's exit( ) Status
				EX_CANTCREAT
				EX_CONFIG
				EX_IOERR
				EX_OK
				EX_OSERR
				EX_OSFILE
				EX_SOFTWARE
				EX_TEMPFAIL
				EX_UNAVAILABLE
				EX_USAGE
				Section 15.6.   Pitfalls
				Section 15.7.   Alphabetized Command-Line Switches
				-A
				-B
				-b
				-ba
				-bD
				-bd
				-bH
				-bh
				-bi
				-bm
				-bP
				-bp
				-bs
				-bt
				-bv
				-bz
				-C
				-c
				-d
				-E
				-e
				-F
				-f
				-G
				-h
				-I
				-i
				-J
				-L
				-M
				-m
				-N
				-n
				-O
				-o
				-p
				-q
				-R
				-r
				-s
				-T
				-t
				-U
				-V
				-v
				-X
				-x
			Chapter 16.   Debug sendmail with -d
				Section 16.1.   The Syntax of -d
				Section 16.2.   The Behavior of -d
				Section 16.3.   Interpret the Output
				Section 16.4.   Table of All -d Categories
				Section 16.5.   Pitfalls
				Section 16.6.   Reference for -d in Numerical Order
				-d0.1
				-d0.4
				-d0.10
				-d0.12
				-d0.13
				-d0.15
				-d0.20
				-d2.1
				-d2.9
				-d4.80
				-d6.1
				-d8.1
				-d8.2
				-d8.3
				-d8.5
				-d8.7
				-d8.8
				-d11.1
				-d11.2
				-d12.1
				-d13.1
				-d20.1
				-d21.1
				-d21.2
				-d22.1
				-d22.11
				-d22.12
				-d25.1
				-d26.1
				-d27.1
				-d27.2
				-d27.3
				-d27.4
				-d27.5
				-d27.8
				-d27.9
				-d28.1
				-d29.1
				-d29.4
				-d31.2
				-d34.1
				-d34.11
				-d35.9
				-d37.1
				-d37.8
				-d38.2
				-d38.3
				-d38.4
				-d38.9
				-d38.10
				-d38.12
				-d38.19
				-d38.20
				-d41.1
				-d44.4
				-d44.5
				-d48.2
				-d49.1
				-d52.1
				-d52.100
				-d60.1
				-d99.100
		Part III:   The Configuration File
			Chapter 17.   Configuration File Overview
				Section 17.1.   Overall Syntax
				Section 17.2.   Comments
				Section 17.3.   V8 Comments
				Section 17.4.   Continuation Lines
				Section 17.5.   The V Configuration Command
				Section 17.6.   Pitfalls
			Chapter 18.   The R (Rules) Configuration Command
				Section 18.1.   Why Rules?
				Section 18.2.   The R Configuration Command
				Section 18.3.   Tokenizing Rules
				Section 18.4.   The Workspace
				Section 18.5.   The Behavior of a Rule
				Section 18.6.   The LHS
				Section 18.7.   The RHS
				Section 18.8.   Pitfalls
				Section 18.9.   Rule Operator Reference
				$&
				$@
				$@
				$@
				$@
				$@
				$:
				$:
				$:
				$:
				$digit
				$=
				$>
				$[ $]
				$( $)
				$-
				$+
				$#
				$#
				$#
				$*
				$~
				$|
			Chapter 19.   The S (Rule Sets) Configuration Command
				Section 19.1.   The S Configuration Command
				Section 19.2.   The Sequence of Rule Sets
				Section 19.3.   The canonify Rule Set 3
				Section 19.4.   The final Rule Set 4
				Section 19.5.   The parse Rule Set 0
				Section 19.6.   The localaddr Rule Set 5
				Section 19.7.   Rule Sets 1 and 2
				Section 19.8.   Pitfalls
				Section 19.9.   Policy Rule-Set Reference
				check_data
				check_etrn
				check_vrfy and check_expn
				srv_features
			Chapter 20.   The M (Mail Delivery Agent) Configuration Command
				Section 20.1.   The M Configuration Command
				Section 20.2.   The Symbolic Delivery Agent Name
				Section 20.3.   The mc Configuration Syntax
				Section 20.4.   Delivery Agents by Name
				cyrus
				cyrusv2
				discard
				error
				fax
				*file* and *include*
				local and prog
				mail11
				ph
				pop
				procmail
				qpage
				smtp, etc.
				usenet
				uucp
				Section 20.5.   Delivery Agent Equates
				/= (forward slash)
				A=
				C=
				D=
				E=
				F=
				L=
				M=
				m=
				N=
				P=
				Q=
				R=
				r=
				S=
				T=
				U=
				W=
				Section 20.6.   How a Delivery Agent Is Executed
				Section 20.7.   Pitfalls
				Section 20.8.   Delivery Agent F= Flags
				F=%
				F=0 (zero)
				F=1 (one)
				F=2
				F=3
				F=5
				F=6
				F=7
				F=8
				F=9
				F=: ( colon )
				F=| (vertical bar)
				F=/ (forward slash)
				F=@
				F=a
				F=A
				F=b
				F=c
				F=C
				F=d
				F=D
				F=e
				F=E
				F=f
				F=F
				F=g
				F=h
				F=i
				F=I (uppercase i)
				F=j
				F=k
				F=l (lowercase L)
				F=L
				F=m
				F=M
				F=n
				F=o
				F=p
				F=P
				F=q
				F=r
				F=R
				F=s
				F=S
				F=u
				F=U
				F=w
				F=x
				F=X
				F=z
				F=Z
			Chapter 21.   The D (Define a Macro) Configuration Command
				Section 21.1.   Preassigned sendmail Macros
				Section 21.2.   Command-Line Definitions
				Section 21.3.   Configuration-File Definitions
				Section 21.4.   Macro Names
				Section 21.5.   Macro Expansion: $ and $&
				Section 21.6.   Macro Conditionals: $?, $|, and $.
				Section 21.7.   Macros with mc Configuration
				Section 21.8.   Pitfalls
				Section 21.9.   Alphabetized sendmail Macros
				$_
				$a
				${addr_type}
				${alg_bits}
				${auth_authen}
				${auth_author}
				${auth_ssf}
				${auth_type}
				$b
				${bodytype}
				$B
				$c
				${cert_issuer}
				${cert_md5}
				${cert_subject}
				${cipher}
				${cipher_bits}
				${client_addr}
				${client_flags}
				${client_name}
				${client_port}
				${client_resolve}
				${cn_issuer}
				${cn_subject}
				${currHeader}
				$C
				$d
				${daemon_addr}
				${daemon_family}
				${daemon_flags}
				${daemon_info}
				${daemon_name}
				${daemon_port}
				${deliveryMode}
				${dsn_envid}
				${dsn_notify}
				${dsn_ret}
				$D
				$e
				${envid}
				$E
				$f
				$F
				$g
				$h
				${hdr_name}
				${hdrlen}
				$H
				$i
				${if_addr}
				${if_addr_out}
				${if_family}
				${if_family_out}
				${if_name}
				${if_name_out}
				$j
				$k
				$l (lowercase L)
				${load_avg}
				$L
				$m
				${mail_addr}
				${mail_host}
				${mail_mailer}
				${msg_size}
				$M
				${MTAHost}
				$n
				${nrcpts}
				${ntries}
				$o
				${opMode}
				$p
				$q
				${queue_interval}
				$r
				${rcpt_addr}
				${rcpt_host}
				${rcpt_mailer}
				$R
				$s
				${sendmailMTACluster}
				${server_addr}
				${server_name}
				$S
				$t
				${tls_version}
				$u
				$U
				$v
				${verify}
				$V
				$w
				$W
				$x
				$X
				$y
				$Y
				$z
				$Z
			Chapter 22.   The C and F (Class Macro) Configuration Commands
				Section 22.1.   Class Configuration Commands
				Section 22.2.   Access Classes in Rules
				Section 22.3.   Classes with mc Configuration
				Section 22.4.   Internal Class Macros
				Section 22.5.   Pitfalls
				Section 22.6.   Alphabetized Class Macros
				$=b
				$={checkMIMEFieldHeaders}
				$={checkMIMEHeaders}
				$={checkMIMETextHeaders}
				$=e
				$=k
				$=m
				$=n
				$={persistentMacros}
				$=q
				$={ResOk}
				$=R
				$={tls}
				$=s
				$=t
				$=w
			Chapter 23.   The K (Database-Map) Configuration Command
				Section 23.1.   Enable at Compile Time
				Section 23.2.   The K Configuration Command
				Section 23.3.   The K Command switches
				-A
				-a
				-D
				-f
				-k
				-l (lowercase L)
				-m
				-N
				-O
				-o
				-q
				-S
				-T
				-t
				-v
				-z
				Section 23.4.   Use $( and $) in Rules
				Section 23.5.   Database Maps with mc Configuration
				Section 23.6.   Pitfalls
				Section 23.7.   Alphabetized Database-Map Types
				arith
				btree
				bestmx
				dbm
				dequote
				dns
				hash
				hesiod
				host
				implicit
				ldap (was ldapx)
				macro
				netinfo
				nis
				nisplus
				nsd
				null
				ph
				program
				regex
				sequence
				stab
				switch
				syslog
				text
				userdb
				user
			Chapter 24.   The O (Options) Configuration Command
				Section 24.1.   Overview
				Section 24.2.   Command-Line Options
				Section 24.3.   Configuration File Options
				Section 24.4.   Options in the mc File
				Section 24.5.   Alphabetical Table of All Options
				Section 24.6.   Option Argument Types
				Section 24.7.   Interrelating Options
				Section 24.8.   Pitfalls
				Section 24.9.   Alphabetized Options
				AliasFile
				AliasWait
				AllowBogusHELO
				AuthMaxBits
				AuthMechanisms
				AuthOptions
				AutoRebuildAliases
				BadRcptThrottle
				BlankSub
				CACertFile
				CACertPath
				CheckAliases
				CheckpointInterval
				ClassFactor
				ClientCertFile
				ClientKeyFile
				ClientPortOptions
				ColonOkInAddr
				ConnectionCacheSize
				ConnectionCacheTimeout
				ConnectionRateThrottle
				ConnectOnlyTo
				ControlSocketName
				DaemonPortOptions
				DataFileBufferSize
				DeadLetterDrop
				DefaultAuthInfo
				DefaultCharSet
				DefaultUser
				DelayLA
				DeliverByMin
				DeliveryMode
				DHParameters
				DialDelay
				DirectSubmissionModifiers
				DontBlameSendmail
				DontExpandCnames
				DontInitGroups
				DontProbeInterfaces
				DontPruneRoutes
				DoubleBounceAddress
				EightBitMode
				ErrorHeader
				ErrorMode
				FallbackMXhost
				FastSplit
				ForkEachJob
				ForwardPath
				HelpFile
				HoldExpensive
				HostsFile
				HostStatusDirectory
				IgnoreDots
				InputMailFilters
				LDAPDefaultSpec
				LogLevel
				MailboxDatabase
				MatchGECOS
				MaxAliasRecursion
				MaxDaemonChildren
				MaxHeadersLength
				MaxHopCount
				MaxMessageSize
				MaxMimeHeaderLength
				MaxQueueChildren
				MaxQueueRunSize
				MaxRecipientsPerMessage
				MaxRunnersPerQueue
				MeToo
				Milter
				MinFreeBlocks
				MinQueueAge
				MustQuoteChars
				NiceQueueRun
				NoRecipientAction
				OldStyleHeaders
				OperatorChars
				PidFile
				PostmasterCopy
				PrivacyOptions
				ProcessTitlePrefix
				QueueDirectory
				QueueFactor
				QueueFileMode
				QueueLA
				QueueSortOrder
				QueueTimeout
				RandFile
				RecipientFactor
				RefuseLA
				ResolverOptions
				RetryFactor
				RrtImpliesDsn
				RunAsUser
				SafeFileEnvironment
				SaveFromLine
				SendMimeErrors
				ServerCertFile
				ServerKeyFile
				ServiceSwitchFile
				SevenBitInput
				SharedMemoryKey
				SingleLineFromHeader
				SingleThreadDelivery
				SmtpGreetingMessage
				StatusFile
				SuperSafe
				TempFileMode
				Timeout
				TimeZoneSpec
				TLSSrvOptions
				TrustedUser
				TryNullMXList
				UnixFromLine
				UnsafeGroupWrites
				UseErrorsTo
				UseMSP
				UserDatabaseSpec
				Verbose
				XscriptFileBufferSize
				M
			Chapter 25.   The H (Headers) Configuration Command
				Section 25.1.   Overview
				Section 25.2.   Header Names
				Section 25.3.   Header Field Contents
				Section 25.4.   ?flags? in Header Definitions
				Section 25.5.   Rules Check Header Contents
				Section 25.6.   Header Behavior in conf.c
				Section 25.7.   Headers and mc Configuration
				Section 25.8.   Headers by Category
				Section 25.9.   Forwarding with Resent Headers
				Section 25.10.   Precedence
				Section 25.11.   Pitfalls
				Section 25.12.   Alphabetized Header Reference
				Apparently-From:
				Apparently-To:
				Auto-Submitted:
				Bcc:
				Cc:
				Comments:
				Content-Description:
				Content-Disposition:
				Content-Id:
				Content-Length:
				Content-Transfer-Encoding:
				Content-Type:
				Date:
				Delivered-To:
				Disposition-Notification-To:
				Encrypted:
				Errors-To:
				From:
				Full-Name:
				In-Reply-To:
				Keywords:
				Mail-From:
				Message-ID:
				Message:
				MIME-Version:
				Posted-Date:
				Precedence:
				Priority:
				Received:
				References:
				Reply-To:
				Return-Path:
				Return-Receipt-To:
				Sender:
				Subject:
				Text:
				To:
				Via:
				X-Authentication-Warning:
				X400-Received:
		Part IV:   Appendixes
			Appendix A.   The mc Configuration Macros and Directives
			Appendix B.   What's New Since V8.8
				Section B.1.   Chapter 1
				Section B.2.   Chapter 2
				Section B.3.   Chapter 3
				Section B.4.   Chapter 4
				Section B.5.   Chapter 5
				Section B.6.   Chapter 6
				Section B.7.   Chapter 7
				Section B.8.   Chapter 8
				Section B.9.   Chapter 9
				Section B.10.   Chapter 10
				Section B.11.   Chapter 11
				Section B.12.   Chapter 12
				Section B.13.   Chapter 13
				Section B.14.   Chapter 14
				Section B.15.   Chapter 15
				Section B.16.   Chapter 16
				Section B.17.   Chapter 17
				Section B.18.   Chapter 18
				Section B.19.   Chapter 19
				Section B.20.   Chapter 20
				Section B.21.   Chapter 21
				Section B.22.   Chapter 22
				Section B.23.   Chapter 23
				Section B.24.   Chapter 24
				Section B.25.   Chapter 25
			Appendix C.   Error Message Reference
				Section C.1.   Where Errors Are Printed
				Section C.2.   Alphabetized Error Reference
			Appendix D.   The checkcompat ( ) Cookbook
				Section D.1.   How checkcompat( ) Works
				Section D.2.   Reject Bad Body Lines
				Section D.3.   Reject Excess 8-Bit Characters
			Appendix E.   A Map to Tutorial Information
				Section E.1.   How to Use This Guide
				Section E.2.   The Guide
		Bibliography
			Requests for Comments
			Publications and Postings
		Colophon
		Index