[Dovecot] Dovecot rc23 and rc24 freeze after authentication

[Timo Sirainen]

On 28.2.2007, at 6.56, Garret Huntress wrote:

> dovecot: Feb 26 11:50:20 Info: imap-login: Disconnected: Shutting  
> down: method=PLAIN, rip=10.1.15.194, lip=10.1.248.31, TLS

This is a bit interesting. You hadn't been SIGHUPing Dovecot before  
this I guess?

> dovecot: Feb 26 11:50:57 Info: imap-login: Login: user=<user8>,  
> method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
> dovecot: Feb 26 11:50:57 Info: IMAP(user8): Disconnected
> dovecot: Feb 26 11:50:58 Info: imap-login: Login: user=<user9>,  
> method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
> dovecot: Feb 26 11:50:58 Info: IMAP(user9): Disconnected
..

These users just login and disconnect immediately.

> dovecot: Feb 26 11:53:08 Info: IMAP(user1): Disconnected: Logged out
> dovecot: Feb 26 11:53:08 Info: IMAP(user1): Disconnected: Logged out
> dovecot: Feb 26 11:53:08 Info: IMAP(user1): Disconnected: Logged out
> dovecot: Feb 26 11:53:08 Info: IMAP(user1): Disconnected: Logged out

User1 was logged in for a few minutes, but it disconnected with  
LOGOUT command so the connection wasn't really hanging.

> dovecot: Feb 26 11:53:08 Info: imap-login: Disconnected:  
> rip=10.1.20.233, lip=10.1.248.31, TLS handshake
> dovecot: Feb 26 11:53:08 Info: imap-login: Disconnected:  
> rip=10.1.1.254, lip=10.1.248.31, TLS handshake
> dovecot: Feb 26 11:53:08 Info: imap-login: Disconnected:  
> rip=10.1.15.170, lip=10.1.248.31, TLS handshake

These could be some hangs I suppose..

Anyway I'm not really sure what the problem is here. I don't see any  
connection timeouts after login. If user1's 4 connections were  
hanging, it probably had something to do with file locking. Stracing  
and/or getting a rawlog from the hang would be helpful in showing  
what exactly is happening.
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