On Monday 31 October 2011 05:38:16 Robert Schetterer wrote: > Am 31.10.2011 11:35, schrieb Amira Othman: > > I was checking postfix maillog and I found something strange in > > it > > > > from=<>, size=4794, nrcpt=1 (queue active) > > > > Oct 31 12:22:36 mailserver postfix/smtp[24079]: connect to > > smtp.icom.com[64.224.110.142]: Connection timed out (port 25) > > > > Oct 31 12:22:36 mailserver postfix/smtp[24079]: ED0466E68594: > > to=<r...@lmrs.net>, relay=none, delay=47406, > > delays=47385/0.02/21/0, dsn=4.4.1, status=deferred (connect to > > smtp.icom.com[64.224.110.142]: Connection timed out) > > > > > > > > Is this normal to appear in my log file or it must be denied as > > it is from <> (what does this mean??) > > <> is the mailer daemon address no need to worry > guess it wants to send some bounce etc
On the contrary, this is almost always a sign of trouble. Why was a bounce sent? Common causes: backscatter, spammer exploit, open relay ... -- Offlist mail to this address is discarded unless "/dev/rob0" or "not-spam" is in Subject: header