>7- I started relaying my mail through a) a Linux server, and b) Xchange
>server on a completely different class C, it worked.
oops, that's a bad sign
>Now, some facts:
>3- My reverse DNS does not return the domain name I am using to send the
>messages.
Do all of your sender@senderdomain's have A and MX records for each
senderdomain?
of course, the @senderdomain would be the same even when relayed
through another server to AOL.
>But this is unlikely the cause, since the relay linux server is
>not retuning the reverse DNS name either.
Agreed, we haven't seen AOL required the sender mail server have a
correct reverse. In fact, it's very difficult anybody in general to
use reverse as a rejection criterion since so many mail servers don't
have their reverse set up. I don't run in on my IMGate due to too many rejects.
>Speculation:
>1- There must be an AOL internal black list for some reason.
yep, your experience certainly indicates that mail sent successfully
from your server to AOL is not being delivered while your mail
relayed through another server to AOL is being delivered.
btw, this AOL delivery pb has been discussed on the ISP-NT list. No
resolution that I saw there.
All I can think is that there must be some subtle DNS pb with your
@senderdomain or you MTA that AOL is detecting after its MX gateways
accept the mail but before delivery to their mailbox servers. But
that sounds too complicated for them to implement for their mail volumes.
Len
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