Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

Exchange going really slow - outlook exclamation mark!

Posted on 2008-10-17
4
998 Views
Last Modified: 2011-10-19
We have exchange 2003 running on server 2003 R2 across two sites, one domain. Was running fine until last week when people started getting "outlook is trying to contact exchange server" exlamation error. CPU was fine as was memory. We defraged just in case overnight but still no difference.
Then, by coincidence, we had to reboot our DC for the site. (which is also the GC). Immediately exchange recovered and was lighting fast. Since then we still get slowdowns, but these are immediatly resolved by rebooting the DC. Error logs don't seem to show anything untoward and now at a loss to explain/fix it..................
0
Comment
Question by:davelongman
  • 2
  • 2
4 Comments
 
LVL 8

Assisted Solution

by:greesh_hem
greesh_hem earned 200 total points
ID: 22740685
Try to run a DCDiag on the exchange server with the switch

DCdiag /s:Servername

where Servername would be the NETBios name of your domain controller and try to look at the diagnostics to see if you find any failures.

Also try to take a network trace since there is a good possibility that the network packets may be getting dropped.
0
 
LVL 1

Author Comment

by:davelongman
ID: 22740831
Dcdiag passed all tests - file attached.

What's the best way to take a network trace please?

Thanks,
dcdiag.txt
0
 
LVL 8

Assisted Solution

by:greesh_hem
greesh_hem earned 200 total points
ID: 22765128
Install Netmon on one of the Outlook client machine and then run it from there.

http://blogs.technet.com/netmon/
0
 
LVL 1

Accepted Solution

by:
davelongman earned 0 total points
ID: 22851170
Thanks greesh hem, we didn't see packet loss so ran exchange tech assistant. This has shown RPC delays and also a disk bottleneck occuring (we believe due to MAPI clients increasing over time). I am going to install a new scsi drive and move the transaction logs over so hopefully this will resolve the situation. I am confused as to why booting the GC improved matters, but I think it may be because exchange then temporarily stops the processing that was hammering the disk access and then once it found the backup GC it started to slow down again.

Thanks for your help in at least proving it local to the exchange server itself, even though initial diags looked like a DC/AD problem.
0

Featured Post

What is SQL Server and how does it work?

The purpose of this paper is to provide you background on SQL Server. It’s your self-study guide for learning fundamentals. It includes both the history of SQL and its technical basics. Concepts and definitions will form the solid foundation of your future DBA expertise.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

While rebooting windows server 2003 server , it's showing "active directory rebuilding indices please wait" at startup. It took a little while for this process to complete and once we logged on not all the services were started so another reboot is …
In this article, I am going to show you how to simulate a multi-site Lab environment on a single Hyper-V host. I use this method successfully in my own lab to simulate three fully routed global AD Sites on a Windows 10 Hyper-V host.
In this video we show how to create a mailbox database in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Servers >> Data…
This tutorial will walk an individual through the process of configuring their Windows Server 2012 domain controller to synchronize its time with a trusted, external resource. Use Google, Bing, or other preferred search engine to locate trusted NTP …

808 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question