Should I be worried when I see: root+:|sleep 5 as the username? ---------- Forwarded message ---------- From: Mail Delivery System <[email protected]> Date: Wed, Dec 22, 2010 at 02:33 Subject: Postfix SMTP server: errors from sc4-scan54.someserver.com[x.x.x.x] To: Postmaster <[email protected]>
Transcript of session follows. Out: 220 someserver.com ESMTP Postfix In: HELO calistolabs.com Out: 250 someserver.com In: MAIL FROM: <r...@[x.x.x.x]> Out: 250 2.1.0 Ok In: RCPT TO: root+:"|sleep 5 #" Out: 550 5.1.1 <root+:|sleep 5 #>: Recipient address rejected: User unknown in local recipient table Session aborted, reason: lost connection For other details, see the local mail logfile
