[Dovecot] Problem with expire plugin and expunge

[Christoph Pleger]

Hello,

I am running dovecot 2.0.9 with expire plugin, using the sqlite backend. The 
following command is executed every day by cron:

doveadm expunge -A mailbox Trash savedbefore 30d


I started to use the expire plugin about one month ago. Since then, 
using "doveadm search -A mailbox Trash savedbefore <days>" with different 
values for <days>, I could see every day how the messages were getting older.  
Yesterday was the first time that the expression "savedbefore 30d" became 
true for the oldest messages in the Trash mailbox and these messages were 
actually deleted from Trash. But today, all messages that were not deleted 
yesterday are new to "doveadm search", that means that "doveadm search -A 
mailbox Trash savedbefore 0d" shows all messages from Trash, but "doveadm 
search -A mailbox Trash savedbefore 1d" shows no messages from Trash, though 
during the last month I moved messages to Trash every day.

Best Regards
  Christoph