On 11 Jun 2007, at 09:16, Christopher Bonner wrote:
So incoming mail, at least at this level, seems to work. The problem
is limited (as I could have guessed from your mention of
authentication) to outgoing (relay) e-mail. The reason is simple:
CISCO SMTP Fixup (so to speak). Get rid of that cisco crap (and
people pay for that...) and your SMTP transaction will finally work.
Giuliano
Am I right in saying that the configuration of our Cisco switches
need to
be changed then?
Can you point me to more info on the subject?
That is not a switch but a (cisco) firewall I guess:
as I have not worked on Ciscos I can only report some advice from the
Exim list:
Then get a large iron bar and visit your cisco admin. Keep hitting
him
until he takes off the smtp fixup. If he dies first use the iron
bar on
the firewall.
that I think translates into: "disable SMTP fixup".
You could also upgrade:
Only as a side note, not to bring bout discussion....
Cisco released the PIX IOS version 7.x this year. One of the new
features is that they upgraded the SMTP fixup to support ESMTP as
well as SMTP, so we may not be able to say that anymore ;)
it also appears that if you use mail submission port:
submission 587/tcp # Submission
the cisco smtp fixup will not trigger, you must though enable that on
the server (postfix) and open it at the firewall. It is always a good
idea to have that open in case someone has to use your server from
behind some port 25 blocking ISPs.
Giuliano
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