Couple of options:

1. Limit the size of the messages on the Exchange box (sending and receiving)
2. Give a certain group priority (i.e. either web or exchange) for bandwidth (using 
ISA)
3. Upgrade your line/connection
----- Original Message ----- 
From: "Stephen I. Woolhead" <[EMAIL PROTECTED]>
To: "NT System Admin Issues" <[EMAIL PROTECTED]>
Sent: Thursday, August 30, 2001 9:39 AM
Subject: ISA web proxy becomes unreliable with busy outgoing connection



I have the following setup,

ISA server SP1 on Win2k Server Sp2.
1 Exchange server behind ISA using server publishing for SMTP (ex2k sp1,
Win2k Server sp2).
1 Web Server behind ISA using web using reverse proxy. (IIS5 Win2k
Server sp2)

These are three seperate machines.

The setup is simple, the ISA has two NIC's one to the ISP, one to the
internal network.

All this is connected to my ISP via a 256kbs leased line.

My problem is this.  If I flood the incoming connection with traffic (be
that incoming mail, web surfing, FTP etc) the web connection through the
Web proxy on the ISA will continue to function, all be it slowly, I
hardly ever get a connection timeout.

Now if I have a single large upload to the ISP over the connection
(Large outgoing mail or large file being downloaded from our website,
the web proxy starts to time out on nearly every connection attempt,
when the upload finishes, all returns to normal.

Has anyone seen this type of problem before, is there away to cure it?

Thanks

Stephen.

http://www.sunbelt-software.com/ntsysadmin_list_charter.htm


http://www.sunbelt-software.com/ntsysadmin_list_charter.htm

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