i run dovecot 1.1.7 and i have the ldap.conf like this:

base = ou=DOMAIN-Users,dc=domain,dc=com ldap_version = 3 auth_bind = yes dn = cn=ldap,cn=Users,dc=domain,dc=com dnpass = password

I am authenticating against AD2003 and have not have and issue since
it went live back in december... I would say it may be time for you
to update...

On Apr 17, 2009, at 12:40 PM, noahisaac wrote:

Hi -

I've got Dovecot version 1.0.7 running on a CentOS 5.2 machine. It's serving pop, imap and imaps and authenticating against an Active
Directory machine. This all works fine at first, but after about two weeks
or so, dovecot's authentication against AD starts to fail. All of dovecot's authentication attempts time out. I also have postfix on the same
machine authenticating against the same AD, and it does not seem to
experience this issue. If I restart dovecot, the authentication starts working again.

I've gone over /var/log/maillog, but I don't see anything particularly useful. The only thing I really see is: dovecot: IMAP(noah): Disconnected for inactivity

Here's some of the relevant portions of my configs:

dovecot.conf auth default { mechanisms = plain passdb ldap { args = /etc/dovecot-ldap.conf } passdb passwd-file { args = /etc/dovecot/passdb master = yes } userdb static { args = uid=vmail gid=vmail home=/home/vmail/%u } user = root }

dovecot-ldap.conf hosts = admachine.domain.com base = dc=domain,dc=com ldap_version = 3 auth_bind = yes auth_bind_userdn = DOMAIN\%u

Does anybody have any ideas about why this is happening, or maybe
just an idea about how to better troubleshoot it? If you need any more
info, I'll be happy to provide it. Can I tell dovecot to be a little more
verbose with it's log entries (I've already got auth_debug set to yes, but I'm not getting very much info)?

Thanks! Noah

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