>My IMail server
>(<http://www.infinithinksoftware.com/>www.InfiniThinkSoftware.com) can't
>send mail to another particular mail server (jmkdisplays.com), but by
>using another unrelated account (my cable ISP account) I can send mail to
>that domain with no problem. My SMTP log says
>
>SMTP (2112) Trying jmkdisplays.com (0)
>SMTP (2112) MX connect fail "216.168.230.144"
This would indicate that IMail can't connect to port 25 on 216.168.230.144.
Since you are sending mail through rr.com, and not your IMail server, I
can't test to see if you are on any spam lists. But, the most likely
problem is that 216.168.230.144 has blacklisted you.
I would try connecting to that IP on port 25 using telnet from your IMail
server. If you can't connect from there, but can connect from other IPs,
then you are almost certainly blacklisted (the next idea being some sort of
odd network problem).
-Scott
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