RE: Replies to messages very slow

[Martin Blackstone]

Title: Message

Why do you have the Exch server in the DMZ? It should be on the local LAN.

 

-----Original Message-----
From: Chris Hughes [mailto:[EMAIL PROTECTED]]
Sent: Monday, March 04, 2002 12:29 PM
To: MS-Exchange Admin Issues
Subject: Replies to messages very slow

I have an ExchangeServer5.5 SP3 on NT4.0 SP6. I have a Checkpoint firewall between my users and the DMZ where the Exchange server resides. I have configured static ports for DS and IS to accomodate the firewall and this has been configured as such for several months.For sometime now some of my Outlook clients (both 97 and 2000) complain that replying to emails is sporadically very slow. Sometimes Outlook appears hung for upto 2 minutes. Using a packet sniffer on my firewall I can see the RPC conversation go fine, but when the workstation starts communicating to the statically assigned DS port somewhere along the way the DS stops responding. After several retransmits from Outlook, it gives up and starts the whole conversation over starting with the RPC call. Network traffic doesnt seem to be the issue as in the same period of time my Exchange server answers to other calls. Where should I look for the problem. Any help would be appreciated.

Thanks
Chris Hughes

List Charter and FAQ at:
http://www.sunbelt-software.com/exchange_list_charter.htm

List Charter and FAQ at:
http://www.sunbelt-software.com/exchange_list_charter.htm