[Dovecot] Outlook 2000/2003 frequent disconnect issue

[Timo Sirainen]

On Thu, 2007-08-02 at 12:50 -0700, Jeff Ramsey wrote:
> On Aug 1, 2007, at 12:10 PM, Timo Sirainen wrote:
> 
> > On Wed, 2007-08-01 at 12:05 -0700, Jeff Ramsey wrote:
> >> Aug  1 11:58:51 imap dovecot: auth(default): passwd(QUINAULT-
> >> ileneyoung,::ffff:10.200.254.110): lookup
> >> Aug  1 11:58:51 imap dovecot: auth(default): passwd(QUINAULT-
> >> ileneyoung,::ffff:10.200.254.110): unknown user
..
> I did the downgrade back to 0.99.11-8.EL4, which I realize is not  
> truly 0.99.x, it's got some 1.0.? updates inserted from Red Hat.
> 
> Anyhow, I did not get anymore messages about 'user unknown'  
> immediately after the downgrade. However, I was still getting a few  
> 'IMAP Server disconnected' errors in my Outlook clients. So, on a  
> hunch I ran a diff command between the default 0.99.11-8.EL4 conf  
> file and my old, known working 0.99.11-8.EL4 conf file, restored from  
> a backup, and I noticed that even though I was not using the POP3  
> protocol at all, I still have the outlook-pop3-no-nuls and the oe6- 
> fetch-no-newmail workarounds enabled, along with the outlook-idle  
> workaround. So, I added those two workarounds to the default config,  
> and it is working again. No 'IMAP Server disconnected' errors all day  
> long.
> 
> In 0.99.11-8.EL4, could this outlook-pop3-no-nuls be solving this  
> issue, even though I am using IMAP protocol, not POP3?

No, that setting doesn't do anything for IMAP. Also none of those
settings affect the "unknown user" error, so maybe 0.99 is somehow lucky
in not generating those. Perhaps setting blocking=yes to userdb passwd
args would help.

> Since in 1.0.2, the workarounds are on a separate conf line for POP3  
> and IMAP, is there an equivalent workaround for Outlook with IMAP?  
> The wiki mentions a workaround called 'outlook-no-nuls'. Will that  
> one work with 1.0.2 under the IMAP workarounds line? And am I being  
> realistic that this may be my issue?

The outlook-no-nuls only fixes Outlook completely hanging in case it
receives a NUL byte with POP3 protocol. There's no such problem with
IMAP.

-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: This is a digitally signed message part
Url : http://dovecot.org/pipermail/dovecot/attachments/20070809/68423cc6/attachment-0001.bin