8.15 is vulnerable to the IMAP exploit too is it not?  Are you getting
attacked?

T

 

 
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Martin Schaible
Sent: Friday, January 13, 2006 8:21 AM
To: Tripp Allen
Subject: Re: [IMail Forum] IMail 8.15: Queue Manager hanging

Hi Tripp,

So, please tell why, why my CPU was on 100% for a long time?

> one time largely depends on how many threads you have the
> queue manager set to use
These settings are on the default values. I never found detailed infos or a
"how to" to pimp this values. "Trial and Error" might be not a good idea.

> Also, enabling the DNS cache and failed
> domain skipping can really speed up the process of delivering lots of
> messages.
Both is on.

============================================
Am Freitag, 13. Januar 2006 um 16:21 schrieben Sie:

> Having many files to deliver (hundreds in the spool directory) is not
> really a "stress" to the queue manager.  It reads a list into memory and
> then starts processing them, one after another.  The queue manager will
> use all available CPU to send these, but it will also yield cpu to other
> processes that need it as well.  How many messages the queue manager can
> process at one time largely depends on how many threads you have the
> queue manager set to use.  Also, enabling the DNS cache and failed
> domain skipping can really speed up the process of delivering lots of
> messages.

> Tripp


> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Martin
> Schaible
> Sent: Friday, January 13, 2006 9:35 AM
> To: Ipswitch IMail Mailing List
> Subject: [IMail Forum] IMail 8.15: Queue Manager hanging


> Hi,

> I declare today the day of the Queue Manager..

> After updating our anti spam files, we're restarting the smtp and queue
> manager via a program alias.

> For the frist ever, the queue manager service was not in the mood to
> shutdown. In the service applet  the services was visible as "pending
> stopping". I had to kill the service brutally with kill.exe, the only
> choice in situation like this.

> I startet the service and the queue manager startet to deal with about
> 500 files in the spool directory. At this stage the services needed 100%
> of both cpu's and it also needed about 300 megs of RAM. The general
> response time of the server was very high. Quite interesting.

> After 10 minutes the spool directory was almost empty and the load of
> the cpu and RAM looked normal.

> My questions:

> - What was the reason for the unsuccessful shutdown of the service? I
> never had that before.

> - A few hundred spool files stresses queue manager like hell. Our site
> is very small, a few hundred domains. What happens to a big site in
> circumstances like i had? This cleanup task would use hours, or am i
> wrong? 


============================================

-- 
 
Mit freundlichen GrĂ¼ssen

--------------------------------------------
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Martin Schaible
Bahnhofstrasse 27
CH-8702 Zollikon

Phone:   +41 44 391 30 00
Fax:     +41 44 391 32 49

Mail:    mailto:[EMAIL PROTECTED]
URL:     http://www.merlinconsulting.ch
Support: http://support.merlinconsulting.ch

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