Note: Please see this blog post for the most updated recommendations on this subject.
EDIT: On 3/12/2008, we have posted a new blog post that talks about the hotfix that we have released for this...
Updated Jul 01, 2019
Version 2.0
Blog Post
7 MIN READ
Windows 2003 Scalable Networking pack and its possible effects on Exchange
Hello,
I had a couple customers with weird connectivity problems after Windows 2003 SP2 and the three registry changes solved all the problems.
One client was simply Exchange 2003 on new Dell hardware with Windows 2003 SP2 recently applied and connectivity slowed down.
The other client was a new install of Exchange 2007 on HP ProLiant DL360/380G5 servers and we saw most of the problems at a remote site over a T1 (no local DC) that initially looked like firewall port issues until I saw this post. Basically logins over the WAN went from a minute or two to 8-10 minutes, WSUS 3.0 wouldn't pull in the PC's at this office, and the first Exchange 2007 mailboxes moved were very slow and mail in the outbox was stuck at times. We also saw some slowness at the hub site. Setting the three items in the registry to 0 on the two new DC's and Exchange 2007 solved all problems.
I think Microsoft needs to communicate this problem even better as I am sure it is affecting more than just SBS customers (not mine were not SBS customers).
thanks,
Larry H
I had a couple customers with weird connectivity problems after Windows 2003 SP2 and the three registry changes solved all the problems.
One client was simply Exchange 2003 on new Dell hardware with Windows 2003 SP2 recently applied and connectivity slowed down.
The other client was a new install of Exchange 2007 on HP ProLiant DL360/380G5 servers and we saw most of the problems at a remote site over a T1 (no local DC) that initially looked like firewall port issues until I saw this post. Basically logins over the WAN went from a minute or two to 8-10 minutes, WSUS 3.0 wouldn't pull in the PC's at this office, and the first Exchange 2007 mailboxes moved were very slow and mail in the outbox was stuck at times. We also saw some slowness at the hub site. Setting the three items in the registry to 0 on the two new DC's and Exchange 2007 solved all problems.
I think Microsoft needs to communicate this problem even better as I am sure it is affecting more than just SBS customers (not mine were not SBS customers).
thanks,
Larry H