[SOLVED] Does user filter override system spam filter?

[raynix]

What I mean is that:

If I create a custom filter rule for my inbox, like,
emails from someone@someisp.com go to inbox,
does this do the same function as a system wide white list but only applies to my inbox?

Hope I described the question well

[jholder]

I believe that Spam detection is done at the MTA level, when the message comes in.

Filtering is done when the message is stored, so, your filter would not apply to junk mail.

[dahamsta]

Is this still the case? I'd like to bin certain items that hit my Junk folder so checking it over isn't such a chore, but the filters don't seem to apply to mail in the Junk folder. Is there a way of overriding this?

Thanks,
adam

[mmorse]

If you prefer ZCS 5.0.2+ to use the spam filter function as it works for 5.0.1 and earlier, you can set the zimbraSpamApplyUserFilters option to True.

This can be done by COS:
zmprov mc COSname zimbraSpamApplyUserFilters TRUE
or for individual accounts:
zmprov ma user@domain.com zimbraSpamApplyUserFilters TRUE

History:
In ZCS 5.0.1 and earlier, user filters were run before the spam filter check was run. This meant that if the user filtered mail into a folder, spam would not be identified and sent to the Junk folder. Beginning with 5.0.2, spam check is completed first and messages identified as spam are moved to the Junk folder. With this change, users cannot write a filter to move false positive spam out of the Junk folder. You can create a spam white list for individual accounts that allows an account to identify email addresses that should not be marked as spam:
zmprov ma user@domain.com +amavisWhiteListSender someone@example.com

[dahamsta]

Perfect mmorse, thanks very much for that.

[lbodrozic]

Quick question then, is there a way to get filters to ignore items flagged as junk mail/SPAM in pre-5.0.1 ZCS? I have filters that are matching junk and that's kind of bad.

[mmorse]

Welcome to the forums,

Preferences > mail filters > new filter > header named X-Spam-Flag > contains YES > file into junk > do not process additional filters > make sure it's at the top.
Probably better to do it by X-Spam-Level contains ***** (however many stars for points you want)

Defaults:
zmprov gacf | grep zimbraSpam
zimbraSpamKillPercent 75
zimbraSpamTagPercent 33
(It's given in percentages on the 20pt scale)
100% = 20pts
75% = 15pts
50% - 10pts
33% = 6.6pts

You should really consider upgrading to 5.0.8 though.

[lbodrozic]

Thanks. Upgrade is happening soon. Our IT guy is dragging his feet, but I think we have finally worn him down.