Hi, I am trying to use mail filters on a mailbox, to block certain tld for a client ( e.g .info .biz .autos ). I have set it up 2 different ways ( at the same time ), and neither appears to work. The first method was to set it as follows: Name: dot autos Source: From Matches Regex /.+?@.+?\.autos/ Action: Delete (--BLANK--) Active ( ticked ) This didn't appear to work, so in addition to this, I then set up a second mail filter as follows: Name: dot autos2 Source: From Ends With .autos Action: Delete (--BLANK--) Active ( ticked ) I am on: ISPConfig 3.2.8p1 php7.4 Ubuntu 20.04.5 LTS Am I doing something wrong? or do I have an issue with the server that I need to troubleshoot? Thanks for any help you can offer.