Dear readers
we are using Dovecot 2.2.7 and all of our users are using Thunderbird as their mail client. Some of them additionally use their iPad/iPhone and a very few an Android Mail-Client.
Now one user noticed that two of his mail folders disappeared. He first believed that he accidentally deleted those folders but then he realized that they are still visible from his iPad. I checked this users maildir and everything looks normal. Deleting the index-files made no difference: New index-files were created but those two folders are still invisable from Thunderbird.
My main concern is to find the reason for this behaviour. Maybe folders of other users have disappeared and they have not yet noticed. A fresh installation of Thunderbird will most likely fix this single users problem, but I cannot do this for all of our users.
So here's my question: How would I debug such a situation?
Kind regards
Peter Koch
And here's our config file:
# Dovecot configuration file
default_process_limit = 2048
protocols = imap listen = * base_dir = /var/dovecot/
mail_location = maildir:/mail/%u:LAYOUT=fs
ssl_cert =
service imap-login { inet_listener imap { port = 0 } }
service auth { client_limit = 4096 }
service anvil { client_limit = 5000 }
passdb { driver = checkpassword args = /usr/dovecot/bin/checkpassword }
userdb { driver = passwd override_fields = home=/mail/%u }
protocol imap { mail_max_userip_connections = 1000 }