Hello [EMAIL PROTECTED],

06-Sep-2004 18:43, you wrote:

>> Have you tried dis-/enabling concurrent POP3 connections in the PopFile
>> config?

> Yep.

OK.

Windows XP - Service Pack 1 oder Service Pack 2? Could it be you installed
SP2 and that happend just about the same time you updated TB? :-)

Excerpt from
http://www.microsoft.com/technet/prodtechnol/winxppro/maintain/sp2netwk.mspx

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Limited number of simultaneous incomplete outbound TCP connection attempts

Detailed description

The TCP/IP stack now limits the number of simultaneous incomplete outbound
TCP connection attempts. After the limit has been reached, subsequent
connection attempts are put in a queue and will be resolved at a fixed
rate. Under normal operation, when applications are connecting to available
hosts at valid IP addresses, no connection rate-limiting will occur. When
it does occur, a new event, with ID 4226, appears in the system’s event
log.

Why is this change important? What threats does it help mitigate?

This change helps to limit the speed at which malicious programs, such as
viruses and worms, spread to uninfected computers. Malicious programs often
attempt to reach uninfected computers by opening simultaneous connections
to random IP addresses. Most of these random addresses result in a failed
connection, so a burst of such activity on a computer is a signal that it
may have been infected by a malicious program.

What works differently?

This change may cause certain security tools, such as port scanners, to run
more slowly.

How do I resolve these issues?

Stop the application that is responsible for the failing connection attempts.

--- cut ---

Maybe this applies to you?

Resolution (beware, non-MS, inofficial hack)
http://www.msfn.org/comments.php?shownews=9387


-- 
Best regards,
 Alexander (http://www.neurowerx.de - ICQ 238153981)

The scientists split the atom, and now the atom is splitting us. -- Quentin
Reynolds


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