M
m4 utility 739
machine collating sequence 1174
machine name, display using hostname 149
macro 1174
macro, m4 processor 739
accepting mail from unknown hosts 741
aliases file 736
authenticated relaying 754
backup server 741
checking root’s 632
communicating with users 626
Dovecot 754
exim4 732
forwarding techniques 743t
how sendmail works 735
IMAP server (Dovecot) 754
list server 382
log 736
MAIL variable 309
mailbox 309
MAILCHECK variable 309
maildir format 735
mailing list 752–753
Mailman 752–753
MAILPATH variable 309
mailq utility 738
mailstats utility 738
masquerading 740
mbox format 735
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