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prvs= overiding white list

Printed From: LogSat Software
Category: Spam Filter ISP
Forum Name: Spam Filter ISP Support
Forum Description: General support for Spam Filter ISP
URL: https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=6890
Printed Date: 27 December 2024 at 11:04am


Topic: prvs= overiding white list
Posted By: JeffHildebrand
Subject: prvs= overiding white list
Date Posted: 01 November 2010 at 12:47pm
We have a company that seems to be using a form of Bounce Address Tag Validation that keeps getting blocked.  I have tried adding the domain to the white list but the emails are continuing to be blocked?  The From fields is in the form of
mailto:prvs=59176D4360=username@domainname.com - prvs=59176D4360=username@domainname.com  with the prvs=###= changing each time.
Is there anything else I can try to prevent the emails from getting blocked?
 


Replies:
Posted By: LogSat
Date Posted: 01 November 2010 at 4:15pm
Jeff,

SpamFilter does not look at the "From:" header when handling sender's addresses, as this is just a header, not the real sender's address. SpamFilter instead acts upon the address specified in the "RCPT TO" SMTP command. This address is recorded in the "X-SF-RX-Return-Path" header that is added to the email by SpamFilter, and which will usually also match the email address specified in the "Return-Path" header.

When examining the sender's address in order to whitelist them, you will need to look at this "RCPT TO" address, not the one in the "From:" header.


-------------
Roberto Franceschetti

http://www.logsat.com" rel="nofollow - LogSat Software

http://www.logsat.com/sfi-spam-filter.asp" rel="nofollow - Spam Filter ISP

Posted By: Thermo
Date Posted: 02 November 2010 at 12:38pm
My routine for handling this after releasing one from quarantine is to wildcard the sender in the AutoWhiteListForceDelivery.txt file. I open the file, do a find (CTRL+F), search term is prvs and then I wildcard the address up to the username.

This  mailto:prvs=59176D4360=username@domainname.com - prvs=59176D4360=username@domainname.com |user@ourcompany.com
Becomes this * mailto:prvs=59176D4360=username@domainname.com - username@domainname.com |user@ourcompany.com


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