Noticed a few of these in my logs: May 15 23:22:51 carson postfix/smtpd[6768]: NOQUEUE: reject: RCPT from localhost[127.0.0.1]: 504 5.5.2 <nobody@localhost>: Sender address rejected: need fully-qualified address; from=<nobody@localhost> to=<root@localhost> proto=ESMTP helo=<carson.example.com>
I'm assuming this is some daemon or something trying to send some report/notice to me. Cron messages get through so I'm not quite sure what this is. What main.cf settings would you like to see to debug this? Thx!