On Fri, Feb 13, 2009 at 12:53:23PM -0500, Brian Evans - Postfix List wrote:
> Carver Banks wrote:
> > Hello Everyone,
> > I am seeing weird bounces on my postfix server and can't quite figure out
> > why...
> > It looks like it is failing while passing the mail off to a spam appliance,
> > but from the spam appliance side I see no record of the message. Also
> >
> > Any ideas, I have a couple examples below?
> >
> > Example Mail.log entry:
> >
> > Feb 12 06:17:53 mail01 postfix/smtp[24220]: C06165CE92:
> > to=<user.n...@domain.com>, relay=175.21.0.67[175.21.0.67]:2525,
> > conn_use=18, delay=16, delays=1.4/13/0/1.7, dsn=5.5.0, status=bounced
> > (Protocol error: host 175.21.0.67[175.21.0.67] said: 250 2.0.0 Ok (in reply
> > to DATA command))
The 175.0.0.0/8 block is IANA reserved space. It should not be in use on
private or public networks. I think someone confused 172.16.0.0/12 with
175.16.0.0/12. If the OP is using 175.16 instead of RFC 1918 private
networks, he has some renumbering to do...
--
Viktor.
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