On Nov 21, 2008, at 4:37 PM, Noel Jones wrote:
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.
I'm not following. I know I've done verification before and it
definitely rejects mail. Would you be so kind as to elaborate?
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.
All my stuff happens before-queue. Thanks to who ever came up with
that. Go postfix.
--
Jason Wohlford
<[EMAIL PROTECTED]>
<http://wohlford.org>
