[BlueOnyx:08299] Re: pop password problems

[Roy Urick]

And it gets more interesting.  It looks like the Pam db could be corrupting?  Users are randomly losing pop access due to corrupt passwords. I can login with the user/pass on the console ok. Same combo fails pop login. If I retype  the password in the GUI and save, pop starts working again.

This seems to be a somewhat random issue with new users failing every hour. 

Ideas?

Sent from my iPhone

On Aug 29, 2011, at 12:03 PM, "Roy Urick" <rurick at usa.net> wrote:

> That's an odd one.  Restarting dovecot fixed it.  Bouncing the box prior to
> that did not fix it. 
> 
> -----Original Message-----
> From: blueonyx-bounces at mail.blueonyx.it
> [mailto:blueonyx-bounces at mail.blueonyx.it] On Behalf Of Michael Stauber
> Sent: Monday, August 29, 2011 11:54 AM
> To: BlueOnyx General Mailing List
> Subject: [BlueOnyx:08296] Re: pop password problems
> 
> Hi Roy,
> 
>> I have a handful of users that suddenly cannot pop email. If I enable 
>> shell access I can login under the account, but when I pop using the 
>> same password I get the wrong password error.
>> Any ideas?
> 
> There can be a couple of causes for this. Newer Dovecot versions refuse the
> authentication of affected accounts if they received a certain amount of
> failed logins on them. In that case /var/log/maillog should report that.
> 
> The PAM_ABL support built into BlueOnyx also denies logins if a certain
> amount of failed logins were registered. But if PAM_ABL was doing the
> blocking, then it would also refuse login for all other services and not
> just POP3 or IMAP. 
> In that case events will be logged into /var/log/messages.
> 
> To get a better grasp on why the blocks happen, you may want to check the
> above mentioned logfiles. 
> 
> Once you have determined the cause (or if you're in a hurry) you can try
> this to see if it fixes the issue:
> 
> /etc/init.d/dovecot restart
> 
> That should flush the temporary blocks that Dovecot may impose.
> 
> /etc/init.d/pam_abl stop
> 
> That flushes the blocks that PAM_ABL imposed.
> 
> --
> With best regards
> 
> Michael Stauber
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> Blueonyx mailing list
> Blueonyx at mail.blueonyx.it
> http://mail.blueonyx.it/mailman/listinfo/blueonyx
> 
> 
> ....
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