I keep seeing: Sep 11 06:18:26 pluto.example.com sendmail[2665]: NOQUEUE: pluto.example.com [10.0.0.1] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA in my sendmail log. What is this?
New versions of sendmail log every connection that does not issue valid mail transfer commands. The author recommends that you ignore the message. If you to issue a valid MAIL command, you would still get entries in your log file (but different messages). If the message really bothers you, and you don’t mind breaking the protocol, the author has noticed that sendmail does not log syntax errors: Service TCP/SMTP { send: MAIL\r\n } silly, silly, sendmail developers…
Related Questions
- I keep seeing: Sep 11 06:18:26 pluto.example.com sendmail[2665]: NOQUEUE: pluto.example.com [10.0.0.1] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA in my sendmail log. What is this?
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