Bryan,
Been a while since you addressed the forum! Can you tell us what you found?
Daniel Donnelly
_______________________________________________________
----- Original Message -----
From: "Daniel Donnelly" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, December 18, 2000 12:16 AM
Subject: Re: [IMail Forum] Services stalling out
> WOW!
>
> Bryan,
>
> Don't know why, yet, but the answer is yes, it means 1140 open
> connections.
>
> Now we have to figure out what is happening. If you stop the POP3
> service, it will clear the numbers and you can observe this using
> the Telnet, for a while, opening and closing it and watching that
> last number. Good time to turn on logging for POP3 service, too
> (before the stop/start). That may give us some clues as to what/who
> is doing this. Could even be some form of Dos attack.
>
> The next possibility is that something is keeping data from being
> written by the service, but this might have affects on other
> services, like Web MSG (it read/writes mailbox data). Keep an eye on
> all the running services, to see if anything else is showing effects
> (outside of a general slowdown, but even that might be a clue!).
> Good idea to make sure HD is in good condition by running chkdsk or
> scandisk.
>
> Did the PerfMon graph show anything during this time?
>
> Judging from the first number, the POP3 service had been restarted
> recently. How long was the time from reset to you finding the
> problem? Does this problem seem to happening on any daily or other
> repeatable pattern? Are you reseting the service on some regular
> basis? If not, it might help keep things going while investigating
> things. An AT command with 'net stop pop3d32','net start pop3d32'
> lines, will do the trick.
>
> Daniel Donnelly
> __________________________________________________________
>
>
> In reply to 17 Dec message from [EMAIL PROTECTED]:
>
> >My POP server stopped responding and the last two numbers were
> >1280-1140.
>
> >Does that mean there were 1140 open (locked/inuse/dead/) pop
> >connections?
>
> >Any idea why this might be happening.
>
> >Bryan
>
> >----- Original Message -----
> >From: "Daniel Donnelly" <[EMAIL PROTECTED]>
> >To: <[EMAIL PROTECTED]>
> >Sent: Friday, December 15, 2000 12:03 PM
> >Subject: Re: [IMail Forum] Services stalling out
>
>
> >> Bryan,
> >>
> >> I'll await more info! BTW, keep PerfMon running and showing that
> Queue
> >> Length to be sure it does not change when the problem occurs.
> >>
> >> Daniel Donnelly
> >> ________________________________________________________
> >>
> >> ----- Original Message -----
> >> From: "Bryan Cowell" <[EMAIL PROTECTED]>
> >> To: <[EMAIL PROTECTED]>
> >> Sent: Friday, December 15, 2000 11:21 AM
> >> Subject: Re: [IMail Forum] Services stalling out
> >>
> >>
> >> > Thanks Daniel for the quick response.
> >> >
> >> > NT Auditing is disabled.
> >> > Logging is disabled.
> >> > No other software is running on this machine. Just the typical NT
> >> services.
> >> > The Processor queue length monitor shows almost nothing.
> >> >
> >> > WHEN it dies again I'll check the pop3 header.
> >> >
> >> > ----- Original Message -----
> >> > From: "Daniel Donnelly" <[EMAIL PROTECTED]>
> >> > To: <[EMAIL PROTECTED]>
> >> > Sent: Friday, December 15, 2000 10:54 AM
> >> > Subject: Re: [IMail Forum] Services stalling out
> >> >
> >> >
> >> > > Bryan,
> >> > >
> >> > > When this happens and you get the response from POP3, what
> are the
> >last
> >> 2
> >> > > numbers in that line? The first represents the number of
> connections
> >> since
> >> > > service started and the last, the current number of
> connections to the
> >> > > service. The last is usually a small number (1-10) unless you
> have a
> >> very
> >> > > large number of users, or something is leaving connections
> open, or
> >> > > something is causing the connections to take significantly
> longer than
> >> > > normal to close.
> >> > >
> >> > > Do you have NT Auditing enabled? How about IMail logging (for
> any/all
> >> > > services)? You might try disabling these, to see if that has any
> >effect.
> >> > >
> >> > > What other programs or services are installed and/or running
> on this
> >PC?
> >> > Any
> >> > > AntiVirus software?
> >> > >
> >> > > Attached is a setting for Performance Monitor that checks the
> >Processor
> >> > > Queue Length. If this shows above 20 (average between 0-20
> should be
> >the
> >> > > expected) on the graph, for more than short periods of time,
> then NT
> >is
> >> > not
> >> > > completing tasks in a normal manner and you need to find out
> what is
> >> > slowing
> >> > > this down. MS site may have more on this subject.
> >> > >
> >> > > I tried connecting to both POP3 and SMTP service, but all seemed
> >pretty
> >> > > normal when I did.
> >> > >
> >> > > Daniel Donnelly
> >> > > ________________________________________________________
> >> > >
> >> > > ----- Original Message -----
> >> > > From: "Bryan Cowell" <[EMAIL PROTECTED]>
> >> > > To: <[EMAIL PROTECTED]>
> >> > > Sent: Friday, December 15, 2000 10:08 AM
> >> > > Subject: Re: [IMail Forum] Services stalling out
> >> > >
> >> > >
> >> > > > I too am having similar problems, Dual PII 500 256MB Tons
> of free
> >> > space,
> >> > > > dedicated server. The pop3/smtp services remain active
> and running
> >> but
> >> > > > doing a telnet to port 110 gives me my welcome message but
> never
> >makes
> >> > it
> >> > > to
> >> > > > the point where entering a username is possible. Since the
> service
> >is
> >> > > still
> >> > > > running, monitor and other 3rd party utils think it's still
> it's
> >> > working.
> >> > > > Stopping and restarting the service clears it up....for a
> while.
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