Hi there!

I get a lot of errormessages. My dovecot is: dovecot-core
2:2.3.2.1-1~stretch from Debian stable.

I found this: https://www.dovecot.org/list/dovecot/2013-July/091648.html

So the bug came back...

This Problem was also solved, when i solved the problem, that dovecot marked every mail as \Recent and Unseen which was moving to another mailbox.
The solution was i my case:

Removing the INDEXPVT from mail_location

mail_location = maildir:/var/mail/%u/Maildir:LAYOUT=fs:INDEX=/var/lib/dovecot/db/indexes/Maildir/%u:INDEXPVT=/var/lib/dovecot/db/indexes/Maildir/%u:CONTROL=/var/lib/dovecot/db/control/Maildir/%u

mail_location = maildir:/var/mail/%u/Maildir:LAYOUT=fs:INDEX=/var/lib/dovecot/db/indexes/Maildir/%u:CONTROL=/var/lib/dovecot/db/control/Maildir/%u

This is for completeness.

BR

Jakob