I have run into a sort of impedance mismatch between MAIL FROM signing and
greylisting.
1. I send a message with signed MAIL FROM (old SES)
2. recipient rejects with 450 - try again in 300 minutes
3. sendmail tries again, but the timecode has changed, and so
the recipients greylisting software thinks I'm a new sender.
4. go back to step 2
One solution would be to bind the MAIL FROM to the message somehow
when deferring due to 450. But how to do that with sendmail? I
am signing MAIL FROM via a socket map - which is called on each attempt.
How would I recognize that it is the same message? How could I get
sendmail to keep the new MAIL FROM?
A real klugy solution would be to relay through another server - that's
one way of making the MAIL FROM persistent...
--
Stuart D. Gathman <stuart@bmsi.com>
Business Management Systems Inc. Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flamis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.
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greylisting.
1. I send a message with signed MAIL FROM (old SES)
2. recipient rejects with 450 - try again in 300 minutes
3. sendmail tries again, but the timecode has changed, and so
the recipients greylisting software thinks I'm a new sender.
4. go back to step 2
One solution would be to bind the MAIL FROM to the message somehow
when deferring due to 450. But how to do that with sendmail? I
am signing MAIL FROM via a socket map - which is called on each attempt.
How would I recognize that it is the same message? How could I get
sendmail to keep the new MAIL FROM?
A real klugy solution would be to relay through another server - that's
one way of making the MAIL FROM persistent...
--
Stuart D. Gathman <stuart@bmsi.com>
Business Management Systems Inc. Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flamis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.
-------
To unsubscribe, change your address, or temporarily deactivate your subscription,
please go to http://v2.listbox.com/member/?listname=srs-discuss@v2.listbox.com