On Aug 1, 2007, at 2:26 AM, Timo Sirainen wrote:
On Tue, 2007-07-31 at 17:12 -0700, Jeff Ramsey wrote:
I am now getting the following message on all Outlook Clients:
"Your IMAP Server closed the connection....this can occur if the
connection is idle for too long"
What does Dovecot show in logs as the disconnect reason?
This sounds like the IDLE problem that outlook-idle workaround avoids,
but that's the default so I'd think you haven't disabled it.
I've got the outlook-idle workaround turned on. I am using this line
in the /etc/dovecot.conf:
imap_client_workarounds = outlook-idle
Dovecot does not show any reason for the disconnect. It just shows
that the user logged out:
Aug 1 08:09:44 imap dovecot: imap-login: Login: user=<jefframsey>,
method=PLAIN, rip=::ffff:10.11.254.52, lip=::ffff:65.174.242.66
Aug 1 08:09:44 imap dovecot: IMAP(jefframsey): Disconnected: Logged out
Aug 1 08:10:06 imap dovecot: imap-login: Login: user=<geoff>,
method=PLAIN, rip=::ffff:10.10.254.148, lip=::ffff:65.174.242.66
Aug 1 08:10:13 imap dovecot: imap-login: Login: user=<QUINAULT-
donnaanderson>, method=PLAIN, rip=::ffff:10.200.254.121, lip=::ffff:
65.174.242.66
Aug 1 08:10:13 imap dovecot: imap-login: Login: user=<QUINAULT-
donnaanderson>, method=PLAIN, rip=::ffff:10.200.254.121, lip=::ffff:
65.174.242.66
Aug 1 08:10:52 imap dovecot: IMAP(QUINAULT-donnaanderson):
Disconnected: Logged out
Aug 1 08:10:52 imap dovecot: IMAP(QUINAULT-donnaanderson):
Disconnected: Logged out
I have read that this means that the client was the one that
disconnected, but that does not make sense, because with 0.99.x, I
did not have this issue. And I did not change anything in my Outlook
clients. All I have changed is upgrading Dovecot.
Since my initial post, I have noticed this in my log file as well:
Aug 1 08:13:42 imap dovecot: auth(default): userdb(johnfowler,::ffff:
65.174.242.248): user not found from userdb
Aug 1 08:13:42 imap dovecot: imap-login: Internal login failure:
user=<johnfowler>, method=PLAIN, rip=::ffff:65.174.242.248,
lip=::ffff:65.174.242.66
Aug 1 08:13:50 imap dovecot: imap-login: Login: user=<johnfowler>,
method=PLAIN, rip=::ffff:65.174.242.248, lip=::ffff:65.174.242.66
This does not happen all of the time when a person logs in, in fact I
have not heard of a single person having a login failure, or at least
nobody has told me they got a message about an improper login or
failed password or anything like that so far. The one thing I can
think of is maybe the authentication methods have changed for Dovecot
from 0.99.x to 1.0.2. I use Winbind to authenticate my Active
Directory users to my linux boxen for all of their services, and
Dovecot is no exception. Maybe something has changed in the /etc/
pam.d folder. I have not heard of anyone having any authentication
errors at this point, however, my own computer, which uses Mac Mail
2.1.1 as a client, has in fact been throwing these errors this
morning, a couple of times an hour:
The server error encountered was: The user name and password
specified in Mail preferences were not accepted by the server.
So far, I have not had any error about username and/or password from
any of my Outlook users, just this one Mac client. As soon as I click
on 'Go Online' at the error screen, the error goes away, and
everything is fine for a 5 to 10 minutes, then I'll see it again. And
no, it does not happen every time my client syncs folders to IMAP.
More like one out of 10 times, and really random.
Has anything changed in the way that Dovecot handles authentication
that may be causing this issue? The way that (I think) PAM handles
authentication from Winbind is first it tries local accounts, and
then if they fail, it tries Winbind, so if the local username is not
found, it could explain why it is giving this error:
Aug 1 08:13:42 imap dovecot: auth(default): userdb(johnfowler,::ffff:
65.174.242.248): user not found from userdb
Aug 1 08:13:42 imap dovecot: imap-login: Internal login failure:
user=<johnfowler>, method=PLAIN, rip=::ffff:65.174.242.248,
lip=::ffff:65.174.242.66
Then, when Winbind auth is tried, the authentication succeeds, and I
get:
Aug 1 08:13:50 imap dovecot: imap-login: Login: user=<johnfowler>,
method=PLAIN, rip=::ffff:65.174.242.248, lip=::ffff:65.174.242.66
So, I can see that the Winbind auth is working, but perhaps Dovecot
is sending the client an auth failed after the local auth fails and
before the Winbind auth succeeds.
Thanks for the suggestions so far, unfortunately I've already tried
the outlook-idle workaround. Maybe I should just downgrade to 0.99.x
again. Are there any known issues with a downgrade?
Jeff Ramsey
MIS Administrator
TMI Forest Products, Inc.
[EMAIL PROTECTED]
360.477.0738
--
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.
