2.24.2.1.1.3. File filtering

Regular expressions can be used to filter files with a specific extension. Create a filter to automatically delete emails containing a file with the extension .php: In the section "Rules" need to choose "Body of the letter", then "matches regular expression" and enter regular expression

filename=.+\.php

Instead .php any other extension can be specified. In section "Actions" need to choose "Delete message" and save the changes.