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m class 
M configuration command  2nd  3rd 
m delivery agent flag 
M delivery agent flag 
M line (qf file)  2nd 
M option  2nd 
M rule-testing command 
M= delivery agent equate 
m= delivery agent equate 
m4 preprocessor
    class macros and 
    database-maps and 
    rule sets and 
MACBUFSIZE compile-time macro 
Macintosh 
macro database type 
macros 
    class macros 
    command-line syntax for 
    for compiling sendmail
        troubleshooting 
    config file definitions 
    config file syntax for 
    defining  2nd  3rd 
    expanding 
        recursive expansion and 
    file class macros 
    in header fields 
    initializing 
    for mc configuration (list) 
    mc preprocessor 
    naming  2nd 
    preassigned 
    for relaying 
    required (V8.6 and earlier) 
    restoring macro values 
    in rule set names 
    in rules 
    types of 
    with $& 
    with $? 
MAIL command (SMTP) 
mail filter 
mail.local program 
mail messages 
    blank lines ending 
    body of  2nd 
    body type, specifying 
    bouncing  [See bouncing messages]
    converting between 7- and 8-bit 
    delivering  [See delivery]
    envelope  [See envelope]
    forged 
    forwarding 
    forwarding loops and 
    headers for  [See headers]
    holding 
    hop count and  2nd 
    maximum per connection 
    priority of  [See priority, for mail messages]
    processing limits on 
    redirecting  [See aliases/aliasing]
    rejecting 
    relays for 
    size of  2nd 
    stored in queue in error 
    time placed in queue 
    unique identifier for 
mail program 
Mail Submission Agent (MSA), changing default port for 
mail transfer agents  [See transfer agents, ignoring MX records and]
mail user agents (MUAs)  2nd 
Mail-From: header line 
MAIL_HUB mc macro 
mail11 delivery agent 
mail11 program 
mailbox file 
MAILER( ) m4 macro  2nd 
MAILER( ) mc command 
MAILER-DAEMON alias  2nd  3rd 
mailer= equate (syslog output) 
MAILER_DEFINITIONS m4 command 
mailertable feature 
mailing lists  2nd  3rd  4th 
    EXPN command for (SMTP) 
    internal 
    owner of, defining 
    software for automated management of 
    troubleshooting 
mailq command  2nd 
Majordomo package 
make depend 
Makefile 
makemap program 
manual pages 
manuals 
MAP_NSD compile-time macro 
MAP_REGEX compile-time macro 
MASQUERADE_AS m4 command 
MASQUERADE_AS mc macro 
MASQUERADE_DOMAIN mc macro 
MASQUERADE_DOMAIN_FILE mc macro 
masquerade_entire_domain feature 
masquerade_envelope feature 
MASQUERADE_EXCEPTION mc macro 
masquerading  2nd  3rd  4th  5th 
MATCHGECOS compile-time macro 
matching tokens  2nd 
    minimum matching and 
MAX... compile-time macros 
maximum line length  2nd 
maximum recipients 
mc configuration 
    $Z macro and 
    database-maps and 
    delivery agent configuration and 
    directives for 
    headers and 
    macros for 
        list 
mc files  2nd 
mc preprocessor 
    comments in files 
    configuration version 
MDAs  [See delivery agents]
members, adding to classes 
MEMCHUNKSIZE compile-time macro 
Mende, Bob 
message headers  [See headers, message]
message queues  [See queues]
Message-ID: header line  2nd  3rd  4th 
Message: header line 
message_volume.sh script 
messages  [See mail messages error messages]
messages per connection, maximum 
MeToo option 
MILTER compile-time macro 
Milter library 
MIME (Multipurpose Internet Mail Extensions) 
    headers for 
MIME-Version: header line 
MIME7TO8 compile-time macro 
MIME8TO7 compile-time macro 
MinQueueAge option 
modes
    TempFileMode option 
MODIFY_MAILER_FLAGS configuration command 
mqueue directory  [See queue directories]
MSA (Mail Submission Agent), changing default port for 
msgid= equate (syslog output) 
msp feature 
    ${MTAHost}and 
MTAs (transfer agents) 
MUAs (mail user agents)  2nd 
Muegel, Michael S. 
multiple recipients 
Multipurpose Internet Mail Extensions (MIME) 
    headers for 
MX records  2nd 
    bestmx database-map type 
    bestmx_is_local feature 
    F=0 delivery agent flag 
    ignored by mail transfer agents 
    looking up for addresses 
    offsite hosts 
    with wildcards 
Myers, John Gardiner