Bug 311199

Summary: Mail filters not always applied when messages come in too fast
Product: [Frameworks and Libraries] Akonadi Reporter: Roman Fietze <kde>
Component: Mail Filter AgentAssignee: kdepim bugs <kdepim-bugs>
Status: RESOLVED FIXED    
Severity: normal CC: amantia, bluelightning, mail
Priority: NOR    
Version: 4.9   
Target Milestone: ---   
Platform: unspecified   
OS: Linux   
Latest Commit: Version Fixed In: 4.10.1
Sentry Crash Report:

Description Roman Fietze 2012-12-05 14:08:32 UTC
Test scenario:

- KMail 4.9.4

- IMAP account setup and working properly, here Cyrus IMAP server on the same machine as KMail for testing

- Filter defined, so all messages for the IMAP account (advanced tab) will be moved to local inbox, matching all messages (empty match text fields)

Earlier versions of KMail/akonadi ignored the filter if not applied manually, but this is kind of working now.

Reproducible: Always

Steps to Reproduce:
1. Send a single message to the host and the IMAP server.

2. The message appears for a very short moment in IMAP/Inbox and is moved to local/inbox right away, reappearing there. So good so far, that's fine.

3. Now set up a loop like this:

   for i in 01 02 03 04 04 05 06 07 08 09 10 11 12 13
  do
    echo$i; date | mail -s Test$i localusername; sleep 0.1
  done

  When the sleep goes below a certain limit some of the messages remain in the IMAP/Inbox, on my host about 1 out of 5. On my host, which is an openSUSE 12.1 inside a VirtualBox on a fast host this limit is about 0.1s. Manually applying all filters on all messages in IMAP/Inbox after something went wrong finally moves them where they should have been gone the first time.

Actual Results:  
Messages remaining in IMAP/Inbox.
Comment 1 Norbert Blobel 2013-02-06 02:23:31 UTC
Can confirm this on  4.9.5 "release 3". 

Using pop though. 

For instance, I have the following filter setup.   
opensuse-de@opensuse.org with move to folder OpenSUSE

If one email is coming in, it first shows up for a second or so in the inbox and then it is moved to the assigned folder. 

If 10, 20+ or so mails are received, they all show up in the inbox first, and then about 1/2 of them stay in in box, the other half is moved to the folder assigned.
Comment 2 András Manţia 2013-02-28 08:27:15 UTC
Fixed in KDE 4.10.1 and later by Wolfgang Rohdewald.
http://commits.kde.org/kdepim/185c572e079ef40bee2225e582c11dbdbb35840f