How do I test an SMTP Filter without deleting potentially important email?
You can disable the filter's actions by unchecking both actions:
Action: Action to be taken when a filter matches a message
- Discard - Copy To
at the top of the filter form page.
By viewing your logs, you can see when the filter matches on an Email. It will say something like:
00date0string-0800:IP Filter: Test MATCH: IP Src: <email@example.com> IP dest: <firstname.lastname@example.org>
00date0string-0800:Header Filter: Spam Killa' Src ip: <email@example.com> Dst ip: <firstname.lastname@example.org> Header: Received: from spammer.com ([126.96.36.199])
with some offending text from the email.
The log will not show: