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Re: A site is rejecting our mail - only if sent via proxy

From: Damien Mascord (tuskertusker.org)
Date: Fri Aug 26 2005 - 03:31:42 CDT


Stephen wrote:

> Hi Damien,
>
>>
>> Hi Stephen,
>>
>> Looks strange, perhaps it is checking the the EHLO of your proxy or
>> from
>> your original mail server ?
>>
> I'm wondering if it is something to do with the mail being relayed by
> virtue of it going through the proxy.

Hi Stephen,

Would it be possible to send the same email from both locations (ie,
manually through your proxy (using sendmail binary, rather than netcat),
and normally through your mail server) to another email address under
your control, and then compare the differences in the final email headers ?

You will probably want to use tcpdump or something like that while you
are doing it, to see if there are any real differences that the
receiving mailserver could detect, and reject for some reason.

Damien