On Tue, 2007-03-20 at 12:39 +0100, Thomas Balsfulland wrote:
i am using dovecot v1.0.rc15-1~bpo1 from backports.org on a debian sarge machine as pop3 pop3s imap and imaps server. since some days it seems the pop-server will stop randomly. noone is able get mails, but imap is still working. the logfile says:
When it happens, try logging in manually. What exactly happens? Does it write the "+OK Dovecot ready"? Does it reply to commands? Does it hang only after you've given PASS command? See http://wiki.dovecot.org/TestPop3Installation
dovecot: 2007-03-19 16:44:19 Info: auth(default): password(user1@domain.de,212.100.55.y): Requested HMAC-MD5 scheme, but we have only MD5
I'm guessing this is normal?..
dovecot: 2007-03-19 16:44:26 Info: pop3-login: Login: user=user2@domain.de, method=PLAIN, rip=212.100.55.y, lip=x.x.x.x, TLS
So people are using TLS to log in.
dovecot: 2007-03-19 16:47:09 Info: pop3-login: Disconnected: Inactivity: rip=84.181.7.y, lip=x.x.x.x dovecot: 2007-03-19 16:48:51 Info: pop3-login: Disconnected: Inactivity: rip=84.135.196.y, lip=x.x.x.x dovecot: 2007-03-19 16:49:51 Info: pop3-login: Disconnected: Inactivity: rip=84.135.196.y, lip=x.x.x.x dovecot: 2007-03-19 16:50:36 Info: pop3-login: Disconnected: Inactivity: rip=212.100.55.y, lip=x.x.x.x dovecot: 2007-03-19 16:50:51 Info: pop3-login: Disconnected: Inactivity: rip=84.135.196.y, lip=x.x.x.x dovecot: 2007-03-19 16:50:52 Info: pop3-login: Disconnected: Inactivity: rip=84.181.7.y, lip=x.x.x.x
And these don't, I suppose? Is it related to TLS? Again, when it happens if you could log in normally with telnet, try logging in with OpenSSL's s_client (the same wiki URL tells how).
dovecot: 2007-03-19 18:06:58 Info: imap-login: Disconnected: rip=195.71.y.z, lip=x.x.x.x, TLS
Looks like it hangs IMAP as well?
Also stracing the correct login process (easier to test if you only use one) or dovecot-auth process could be helpful. http://wiki.dovecot.org/Debugging/ProcessTracing