Authentication failed for imapd and imapd-ssl after a while for some users, not always the same ones, at different times (between half an hour and few days). My MDA is courier-imap and courier-imap-ssl.
The logs (mails.log) using thunderbird with ssl:
Same using roundcube without ssl:
May 21 17:47:03 clement-desktop imapd-ssl: Connection, ip=[::ffff:192.168.1.11]
Same thing with ssl.
May 21 17:48:09 clement-desktop imapd: Connection, ip=[::ffff:192.168.1.11]
I tried to restart some service: courier-imap, courier-imap-ssl, courier-authdaemon, saslauthd. But still not working. The only way I found is to reboot the server :/
[23-May-2012 19:38:27 +0200]: IMAP Error: Login failed for ****** from xx.xxx.xxx.xxx. AUTHENTICATE PLAIN: in /usr/share/roundcube/program/include/rcube_imap.php on line 205 (POST /roundcube/?_task=login&_action=login)
I'm not sure, but I think it's since I upgraded from 10.04 to 12.04. Before that, it worked fine.
Any idea ?
Edit: This post solved my problem :