.forward yes (empty files; can enable/disable mail to /file or |command) /usr/mail yes (compile time option) /usr/spool/mail yes (compile time option) /var/mail yes (compile time option) /var/spool/mail yes (compile time option) 8bitmime yes (including 8bit to quoted-printable conversion) :include: yes (mail to /file and |command is off by default) aliases yes (can enable/disable mail to /file or |command) bare newlines yes (but will send CRLF) blacklisting yes (client name/addr; helo hostname; mail from; rcpt to) content filter yes (see FILTER_README) db tables yes (compile time option) dbm tables yes (compile time option) delivered-to yes (configurable with prepend_delivered_header) dsn not yet (bounces have DSN form) errors-to: yes esmtp yes etrn support yes (per-destination log for authorized destinations only) fcntl locking yes (runtime configurable) flock locking yes (runtime configurable) home mailbox yes ident lookup no ldap tables yes (contributed) lmtp support yes (client) luser relay yes m4 config no mail to command yes (configurable for .forward, aliases, :include:) mail to file yes (configurable for .forward, aliases, :include:) maildir yes (in home, system mailspool, /file/name/ alias) mailertable yes (it's called transport) mailq yes majordomo yes (edit approve script to delete /^delivered-to:/i) mime yes (including 8bit to quoted-printable conversion) mime conversion not yet; postfix uses just-send-eight mysql tables yes (contributed) netinfo tables yes (contributed) newaliases yes (main alias database only) nis tables yes nis+ tables not yet no <> in smtp yes (most common address forms) pipeline option yes (server and client) pop/imap yes (with third-party daemons that use /var[/spool]/mail) qmqp server yes (with verp support) rbl support yes return-receipt: not yet sasl support yes (compile time option) sendmail -bt no sendmail -q yes sendmail -qRxxx yes (for domains specified in fast_flush_domains) sendmail -qSxxx no sendmail -qtime ignored sendmail -v yes (but does not show delivery) sendmail.cf no (uses table-driven address rewriting) size option yes, server and client smarthost yes (specify relayhost in main.cf) tcp wrapper no (use built-in blacklist facility) user+extension yes (also: .forward+extension) user-extension yes (also: .forward-extension) user.lock yes (runtime configurable) uucp support yes (sends user@domain recipients) verp support yes (delimiters are configurable) virtual domains yes (via local delivery agent and via dedicated delivery agent) year 2000 safe yes