On 02/12/2010 09:17, Mike Cardwell wrote:
>> Thanks for the feedback. I double checked my logs and noticed that BATV mail tagged with prvs= is being handled correctly. And callouts succeeding.
>>
>> The problem is limited to mails tagged with BTV1==. Log details below, email addresses removed of course
>>
>> 2010-11-03 13:59:13 H=mcsdspam02.muscogee.k12.ga.us [96.38.231.248] F=<btv1==9238326409d==EMAIL> rejected RCPT <EMAIL>: Sender verify failed
>>
>> I manually checked and the email address in this instance does exist.
>
> That looks like they rejected your callout with the message "Sender
> verify failed" which suggests they did some sort of verification of the
> sender address you used. Sounds like their system might be set up
> incorrectly. Suggest you contact the admin of that particular system.
This is the price you pay with callouts. For what it's worth, when I
experimented with them, I found it was best to put the callout in the
predata acl rather than in an earlier acl, so that my own callouts
weren't triggered unless an actual email was incoming. It's also worth
not doing them when SPF or DKIM pass, or when the sender IP is on a
whitelist such as dnswl.org. After all, the only point of callouts is to
prevent sender spoofing.
--
Mike Cardwell
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Professional
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