[SOLVED] Mail Filter / Whitelisting Addresses

XN-Matt

Well-Known Member
Aug 21, 2017
90
7
48
42
We've tried whitelisting some addresses against the whole system which always fail spam checks but are valid.

We have a WHO record created trying to match the address in each way:

Reg exp: "*.@domain.com"
Email: "specificemail@domain.com"
Domain: "domain.com"

They are set within the filter with a prio of 85 with actions of ACCEPT and to: the WHO list above.

These never seem to work and the messages always then match with the last rule (prio 80) which checks for a score of 4 or more, sets a header and keeps in quarantine.

What could be going wrong?
 
Last edited:
The only thing i've been able to find as the possible cause is logging shows the From as the Return-Path:

```Jan 11 23:34:05 mxg2 postfix/smtpd[222092]: proxy-accept: END-OF-MESSAGE: 250 2.5.0 OK (4CB7963BF476BBCF83); from=<bounces+xxxx-6205-xxxx=xxxx.co.uk@em2614.xxxxx.co.uk> to=<xxxx@xxxx.co.uk> proto=ESMTP helo=<o168-245-117-49.outbound-mail.sendgrid.net>```

It's fair to say, our rules are written for the From address which does match the headers. It does not reflect the Return-Path address.

Should the whitelist rules be written to match the address seen in the Return-Path instead?
 
* The Who objects match the envelope-addresses of a mail (this is what you see as Return-Path in your mail-client)
* If you want to match the From header of a mail - use a What Object (Match Field, with a field 'From')

I hope this explains it!
 
Thanks - that does.

It may be an ideal to improve the documentation on this with some examples as that's pretty limited.
 

About

The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway.
We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get yours easily in our online shop.

Buy now!