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A Mail Virus Scanner (AMaViS), 404
addresses
distinction from programs and files, 4
extension addresses, 141
case of characters gotcha, 466
dots (.) in extension addresses gotcha, 466
filtering messages and, 145–146
junk mail control and, 287, 294
receiving messages and, 141–142
qmail-inject
name-address format and, 131
address-comment format and, 131
qualification and, 419
setting envelope sender addresses, 129–130
tagged addresses, 294
adjusting message lifetimes/retry schedules, 192
advantages and disadvantages of qmail, 3–9
disadvantages, 9, 16
performance, 6–7
reliability, 7
security, 3–6
simplicity, 8–9
advisory spam controls, defined, 285, 287
AIX, creating users and groups in, 60
aliases, 116
/var/qmail directory, 17
advanced configuring, 245–249
configuring, 116–117
creating system aliases, 49, 77
support of host name aliases, 14
Allbery, Russ, and Majordomo FAQs, 305, 313
alrm function in qmailctl, 162
AMaViS, 404
Anti-Spam HOWTO Web site, 285
APOP authentication, 358–362
Apress Web site, 27
architecture. See file structure; modular system architecture
assign, and single dot (.), 117
at sign (@), in POP3 usernames, 383
authenticated relaying, 113–115
authentication
of IMAP, 367–369
of POP3, 353
of SMTP, 264–273
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