Nick Smith wrote:
Let me see if I have this right:
[SMTP_A] ---- [COMCAST GW] ---- [SMTP_B]
And you are saying that SMTP_A can _receive_ email, but cannot _send_ email?
that is correct, they are recieving mail on theirdomain.org and sending
on smtp.comcast.net which is now blocked.
Ok, so what you'll have to do is use SMTP_B as a relay. Get the SMTP_B
server listening on some random port (say 2500) and then have SMTP_A
send to SMTP_B on that port. You can do this entirely by using
iptables, without changing the SMTP configuration.
I do not believe that Comcast is preventing relays through their SMTP
server. I am very suspicious actually -- either they have blocked
SMTP_A for a very specific reason (have they been spamming? not paying
on their account? etc?), the Comcast IT department is ridiculously
incompetent or their new policy-makers are idiots.
_k
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