[BlueOnyx:20329] Re: Authentication failed

[Lewis Gardner]

Certainly something I'll check next time this happens.

In this particular case it was my email accounts on two vsites that 
happened at the same time. I don't manually enter my password. It is 
entered automagicaly by Thunderbird and Gmail on an Android. The first 
indication I had that there was a problem was around noon when my phone 
started giving me failed login messages via Gmail.

Since I was out on a jog and was busy I ignored the problem until I got 
back around 7. I did the restarts and the problem persisted so I sent 
the message.

It apparently cleared itself up around 11.

I appreciate the ideas of what to look for in troubleshooting this sort 
of problem.


Chuck Tetlow wrote:
> Probably too many failed log in attempts.  I have it happen with users 
> all the time - they call me and say they've only fat-fingered their 
> password once or twice.  But the server is not set to block until after 
> five failed attempts.  After the time-out period, mail starts flowing 
> again.
> 
> And in our case - that failed Login Manager block can stop ALL mail to 
> the BX server, not just one user.  That's because everything flowing to 
> our BX servers goes through a CanIt Domain Pro SPAM filtering server.  
> When CanIt is not sure if its SPAM or HAM - it holds the message for 
> human review and sends a notice to the user to log in and check the 
> message. 
> 
> But there are not logins for every user on the CanIt server (thousands 
> of users).  They login to CanIt with their end server's username & 
> password.  The server sends that to their BlueOnyx server in a POP 
> connection.  If the BX server lets them in - CanIt lets them into CanIt 
> to perform the human review of what messages are in the traps.  So if 
> someone makes a BUNCH of failed login attempts to CanIt - the BlueOnyx 
> Login Manager blocks that IP (the CanIt server), and all e-mail comes to 
> a screeching halt.  Once the timeout lifts the IP block - mail starts 
> again on its own.  But what  PIA! 
> 
> If it happens again Lewis - check for blocks in the SERVER MANAGEMENT, 
> SECURITY, and FAILED LOGINS.   I'd suggest clicking the "Reset all 
> blocks" button, and see if mail starts again.
> 
> 
> Chuck
> 
> 
> 
> *---------- Original Message -----------*
> From: Lewis Gardner <lewisg at iglou.com>
> To: BlueOnyx General Mailing List <blueonyx at mail.blueonyx.it>
> Sent: Sat, 03 Dec 2016 09:58:57 -0500
> Subject: [BlueOnyx:20326] Re: Authentication failed
> 
>  > Sorry for not updating this post.
>  >
>  > I tried unclicking Enable SMTP Server, Enable SMTP Auth and Enable POP
>  > Server (for good measure) then saved in the GUI. Waited a few minutes
>  > and reclicked those three and saved. No joy.
>  >
>  > About two hours later email resumed without further action on my part.
>  >
>  > Did making those changes in the GUI restart dovecot?
>  >
>  > Thanks!
>  >
>  > Michael Stauber wrote:
>  > > Hi Lewis,
>  > >
>  > >> Did something change?
>  > >>
>  > >> When trying to get email via POP I'm getting;
>  > >>
>  > >> "Sending of password did not succeed. Mail server xxxx.xxx responded:
>  > >> Authentication failed."
>  > >
>  > > Nope, there were no updates which could have caused this. Perhaps
>  > > dovecot-auth has hung up after a brute force attack?
>  > >
>  > > Try to stop dovecot. Then check the process list and kill off anything
>  > > related to dovecot that' still running. Then restart the service 
> and see
>  > > if it works. It usually does.
>  > >
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> *------- End of Original Message -------*
> 
> 
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