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Dovecot generates Error: Threading lost Message ID in dovecot.log Problem is only with one Maildir. This Maildir cannot be accesed through webmail (in this case Roundcube), error in webmail after log in: 

Server Error: UID THREAD: Internal error occured. Refer to server log for more information.

The only suggestion I've found is here: http://www.dovecot.org/list/dovecot/2013-August/091939.html but I still don't know what causes the problem, how to fix it and how to avoid it in the future, so any suggestion appreciated.

Kind regards!

gaspar
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1 Answers1

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And finaly I've found the solution. Somehow file dovecot.index.thread was corupted and causes the problem. I've deleted file dovecot.index.thread, the file was rebuild then properly, and problem was solved.

gaspar
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