telnet localhost 25でConnection closed by foreign host.
$ telnet localhost 25 Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. Connection closed by foreign host.
/var/log/mail
を見るとこんな感じのログが
Feb 8 09:43:20 www3075ue postfix/smtpd[12732]: connect from localhost[127.0.0.1] Feb 8 09:43:20 www3075ue postfix/smtpd[12732]: warning: SASL: Connect to private/auth failed: No such file or directory Feb 8 09:43:20 www3075ue postfix/smtpd[12732]: fatal: no SASL authentication mechanisms Feb 8 09:43:21 www3075ue postfix/master[23716]: warning: process /usr/libexec/postfix/smtpd pid 12732 exit status 1 Feb 8 09:43:21 www3075ue postfix/master[23716]: warning: /usr/libexec/postfix/smtpd: bad command startup -- throttling