# tail -f /var/log/maillog web1 postfix/pickup[2170]: 4140624C056E: uid=1002 from=<hogeuser> web1 postfix/cleanup[2836]: 4140624C056E: message-id=<adretrkpxxxdfds@example.com> web1 …
Plesk12.5.30 25番で待ちうけさせる status=deferred (connect to example.com[111.xxx.yyy.2]:25: Connection refused)
