Jason Wohlford wrote:
On Nov 15, 2008, at 1:36 PM, Noel Jones wrote:
Jason Wohlford wrote:
Is there any way to perform an address verification on a message and
then add a header to the message? I'd like to let postfix do address
verification and then report the result to spamassassin. Suggestions?
Cheers,
Jason
Postfix doesn't have a mechanism to record the results of the address
probe in the received message.
Your best alternative may be a sender verification add-on for
SpamAssassin; google around for that. Sometimes also called sender
call back.
Or you could use a postfix policy service with this feature - but you
might have to write your own or modify an existing one.
I see it is possible to set the unverified_recipient_reject_code to 250.
Does this mean postfix will do address verification and then let the
original message pass?
If an address probe returns a 550 status, postfix will still
accept the mail. If the probe fails (couldn't contact the
sender's MX) postfix will still defer the mail with a 450 error.
My end goal is to let postfix handle the address verification, while
another process handles the rejection. A spamassassin plugin (or another
bit of software) could query the address_verify_map (or mail logs) and
then act accordingly.
Comments?
DO NOT bounce mail after you've accepted it. Any after-queue
content_filter MUST NOT reject mail. This causes backscatter
and will get you blacklisted.
Seems like I've seen some milters that do address
verification, maybe some of those integrate with SpamAssassin.
--
Noel Jones
