Bug Configuration: Mail Proxy - Whitelist - sender domain whitelist does not work

poetry

Active Member
May 28, 2020
206
57
33
Hello,

Can someone try to replicate this by adding DNSBL Sites and then trying to Whitelist a domain (sender domain) and seeing if whitelisting works?.

We are running the latest version 6.3-5.

Make sure you restart postfix process otherwise the changes are not applied.

There seems to be a bug so Whitelist only works if you add IP/IP network.

Thank you!
 
There seems to be a bug so Whitelist only works if you add IP/IP network.
This is correct - the DNSBL checks are done in postscreen:
http://www.postfix.org/POSTSCREEN_README.html
and postscreen only has access to the IP (it checks before the MAIL FROM command) when doing the lookups.
You need to add the IP(range) in the mailproxy whitelist to prevent it from being rejected

I hope this explains it
 

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