+++ Philip Hazel [exim-users] <15/01/02 09:05 +0000>:
> On 14 Jan 2002, Patrick D. Avery wrote:
> > After moving my Exim server from one co-location facility to another. I
> > began to see the following errors. Any ideas as to what they are?
> > 2002-01-10 18:08:27 SMTP syntax error in "XXXX invincible.cnchost.com
> > H=invincible.concentric.net [207.155.248.15.36317]: unrecognized command
> The Exim server received the invalid SMTP command
> XXXX irresistable.cnchost.com
> from the host irresistable.cnchost.com [207.155.248.34.19906]. That's
> all you can say from that log line. If it persists, you'll have to
> contact the postmaster at the sending host to find out what's going on.
> (Unless there is an SMTP proxy or something sitting between you and the
> world. If so, check that it isn't mangling things.)
That XXX sounds like an error generated by Cisco Pix that munges lots of
things it considers 'harmful' ...
Example from a pix box -
220 ***************************************************
ehlo test
500 Command unknown: 'XXXX'
quit
=srs
