[kmail2] [Bug 358041] spamassassin filter deletes every incoming mail

[via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=358041

--- Comment #3 from 1358 at gmx-topmail.de ---
To sum up kmails behavior:

- There is an incoming email (OK)
- kmail sends it through spamassassin/spamc (OK)
- spamassassin's own log says:
EMPTY_MESSAGE,MISSING_DATE,MISSING_FROM,MISSING_HEADERS,MISSING_MID,MISSING_SUBJECT,NO_HEADERS_MESSAGE,NO_RECEIVED,NO_RELAYS 
- kmail detects the spam flag in spamassassin's report (OK)
- kmail moves the email eg to trash. (OK)

The problem:

- The incoming mail was not empty. It is a normal email.
- Obviously kmail sends an empty file through spamassassin/spamc.
- The empty file is recognized as spam.
- Spamassassin generates its report, and kmail uses that X-Spam-Flag header for
further filtering.

Interesting fact: The mail is not replaced with spamassassins report. It stays
untouched, but is moved to trash.

So it seems as if the "pipe this email through a program" filter does not work
reliably.
Maybe a race condition?

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