On 22/09/2026 21:29 EEST cesco via dovecot <dovecot@dovecot.org> wrote:

Hi

imap process sometimes goes in infinite loop when deleting folders giving error:

imap(user@mydomain.org)<996><EU1JPBZc3NisFAAC>: Couldn't create mailbox list lock /var/vmail_indexes/mydomain.org/user@mydomain.org/mailboxes.lock: file_create_locked(/var/vmail_indexes/mydomain.org/user@mydomain.org/mailboxes.lock) failed: fcntl(/var/vmail_indexes/mydomain.org/user@mydomain.org/mailboxes.lock, write-lock, F_SETLKW) locking failed: Timed out after 60 seconds (WRITE lock held by pid 316)

dovecot is running inside a container based on debian 13

attached sysreport and gdb

many thanks

Any idea what process 316 is?

Aki