2010/1/27 Vegard Svanberg <veg...@svanberg.no>: > Hi list, > > I'm receiving several thousand errors per day from Postfix. The error is > "454 4.7.0 TLS not available due to local problem" (see below). > > TLS is working, and has been for a long time. I've verified this by > telnet and running STARTTLS. But it seems to stop working from time to > time, and I suspect it happens when the server has a lot to do (read: > being flooded by spam). I set tls_random_source to dev:/dev/urandom to > rule out any entropy-related problems, but no go. > > The error messages give me nothing to go on, and the mail logs don't > give any clues either. > > This is Postfix 2.5.5-1.1 (from Debian Lenny) on x86-64. > > Out: 220 XX ESMTP > In: EHLO ne.jp > Out: 250-XX > Out: 250-PIPELINING > Out: 250-SIZE > Out: 250-VRFY > Out: 250-ETRN > Out: 250-STARTTLS > Out: 250-AUTH PLAIN LOGIN > Out: 250-ENHANCEDSTATUSCODES > Out: 250-8BITMIME > Out: 250 DSN > In: STARTTLS > Out: 454 4.7.0 TLS not available due to local problem > In: MAIL FROM:<adyybiwut2...@ne.jp> SIZE=3282 > Out: 250 2.1.0 Ok > In: RCPT TO:<axesli...@mydomain> > Out: 450 4.1.8 <adyybiwut2...@ne.jp>: Sender address rejected: Domain not > found > In: QUIT > Out: 221 2.0.0 Bye > > Any ideas? Thanks in advance.
Look at logs. "Out: 450 4.1.8 <adyybiwut2...@ne.jp>: Sender address rejected: Domain not" looks like DNS problem -- Eero
