[Bug 151113] New: kontact/kmail & spamassassin makes e-mail messages disappear

[Elgar Pichler]

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http://bugs.kde.org/show_bug.cgi?id=151113         
           Summary: kontact/kmail & spamassassin makes e-mail messages
                    disappear
           Product: kontact
           Version: unspecified
          Platform: Fedora RPMs
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: kdepim-bugs kde org
        ReportedBy: epichler verizon net


Version:            (using KDE KDE 3.5.7)
Installed from:    Fedora RPMs
OS:                Linux

Used RPMS:
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kdepim-3.5.7-3.fc7
spamassassin-3.2.3-44.fc7

Set-up:
-------
Created standard spam filter with kmail anit-spam wizard.

Expected behavior:
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Incoming messages should be piped through Spamassassin Check filter command and classified accordingly as spam/no-spam. Messages classified as spam should be marked as spam and moved into a local folder spam by the subsequent Spam handling filter.

Observed behavior:
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Incoming messages seem to be filtered through spamassassin (corresponding spamassassin processes are spawned during filtering), but some e-mail messages are lost in that process. I.e., ~2-5 messages in 10 simply disappear from kmail (cannot be found in any of the kmail folders). No reason for those disappearances could be identified so far, messages seem to disappear randomly, regardless if they seem to be spam or non-spam messages.
Disabling the spam related filters for incoming messages takes care of the disappearing problem, but lack of spam filtering is of course also not desirable.

Other comments:
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Filtering incoming messages through anti-virus check and handler filters (created by the anti-virus wizard, using klamav) seems to work as expected.
No reproducibility tests have been performed with, e.g., runs over the same /var/spool/mail/foo user mail spool file. I'd suggest starting with tests like that where /var/spool/mail/foo contains 10-20 e-mails of different length, some of them spam, some not.
I have also no clue at the moment if this is
  - a spamassassin bug,
  - a kmail/spamassassin integration bug,
  - or an artefact of my setup.
Thanks in advance for investigating this. Would be interested to know if you can reproduce that bug or what your suggestions are. Cheers,
e2.