Date:  Sat, 14 Apr 2007 18:16:05 -0400
From:  "Paul Aviles" <paul.aviles (at mark) nickelnetworks.com>
Subject:  [coba-e:09568] Re: Dovecot/POP3 Flood
To:  <coba-e (at mark) bluequartz.org>
Message-Id:  <200704142216.l3EMGN4w022593 (at mark) srv1.nickelnetworks.com>
In-Reply-To:  <!~!UENERkVCMDkAAQACAAAAAAAAAAAAAAAAABgAAAAAAAAARDhjVlX2aEuqbKE5moo4BsKAAAAQAAAABflGe1/pLkCisWM6ZgzZBwEAAAAA (at mark) xnet.com.mx>
X-Mail-Count: 09568

If PAM is the issue why we don't see this behavior with other services as
well?
 
It will be fairly simple to setup some scripts to hammer a server or even
use Jakarta Jmeter to create some load simulations and quickly see if that
is the case. 
 
If anyone is interested in working together with this issue let me know.
 
Paul Aviles
Nickel Networks
 
  _____  

From: Rodrigo Ordonez Licona [mailto:rodrigo (at mark) xnet.com.mx] 
Sent: Friday, April 13, 2007 7:18 PM
To: coba-e (at mark) bluequartz.org
Subject: [coba-e:09566] Re: Dovecot/POP3 Flood


On our experience this problem went away when we convinced one of our
customers to change the behaviour to check email Every Minute 90 users one
IP every minute, 
 
this has kept the horrendous problem away,
 
But gives at least in our case clues about the problem.

PAM Eficiency, I would go for the caching option, I know its not easy to go
testing features on productions servers ...
 
Good luck and please report back 
 
Regards
 
Rodrigo O
Xnet

  _____  

From: Darrell D. Mobley [mailto:dmobley (at mark) uhostme.net] 
Sent: Viernes, 13 de Abril de 2007 12:56 p.m.
To: coba-e (at mark) bluequartz.org
Subject: [coba-e:09561] Re: Dovecot/POP3 Flood



I think it is imperative for us to find the cause of Dovecot's problems and
resolve them.  Email is a mission critical component for most webhosting
accounts, probably more so than the actual serving of web pages.  If we
allow this deficiency to cripple the BQ platform, it's going to kill the
project.  No one will want to migrate to or install a web hosting platform
that will hobble the email aspect of your operations.

 

From: Paul Aviles [mailto:paul.aviles (at mark) nickelnetworks.com] 
Sent: Friday, April 13, 2007 1:40 PM
To: coba-e (at mark) bluequartz.org
Subject: [coba-e:09559] Re: Dovecot/POP3 Flood

 

I think this is the issue that will never die.. I am seeing the same
behavior on servers with the latest releases also...

 

Regards,

 

Paul Aviles

Nickel Networks

 

 

  _____  

From: Darrell D. Mobley [mailto:dmobley (at mark) uhostme.net] 
Sent: Tuesday, April 10, 2007 10:25 AM
To: coba-e (at mark) bluequartz.org
Subject: [coba-e:09510] Re: Dovecot/POP3 Flood

For all of its problems, at least the old system worked.  Can't say that
much for dovecot.


	
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