Outlook / Exchange Problems

SeanDonnelly
SeanDonnelly used Ask the Experts™
on
We are running Exchange Server 5.5, and clients are using Outlook 97+2000. At our remote offices, which connect via Frame Relay at port speeds of 64K-512K we have many complaints of slow downs. My question is this...When an email attachment is sent out to user at a remote site, and the user then opens that email, not the attachment does Outlook open a portion of the attachment in anticipation of the possibility the user is going to open it? We're wondering if this could be part of the slow down? Obviously if multiple users are opening attachments at a remote site and the attachment is fairly large it will slow down over the WAN link, but many times nothing is opened but a slow down still occurs?

Any insight is apppreciated!
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Did you increase the server timeout in outlook properties advanced and checked?

Author

Commented:
Yes, these options have been modified on a few occasions.

Commented:
Do the users have local PST files that store their mail or is it all kept on the server?  If the mail is stored locally on the client PC's, the entire message is transferred whether it is opened or not.
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Author

Commented:
It's kind of a mixture some mobile users have their mail being deilivered to a pst file, and I figured that everything was downloaded in this scenario. Most users are getting their mail from the server since most are on desktops, and it's just been that way since day one.
Commented:
Here's the thing - you have a ridiculous amount of variables going on.  "Slow downs" can be so many things.  Maybe it's the server. Maybe it's something happening on the remote network.  Maybe you aren't getting the full port speed out of your Frame network due to carrier slow downs.  Maybe one of the other clients on the network is downloading some new software for their Palm Pilot.  Maybe someone else is transferring some files.  Want me to keep going?  I can.  Without having a good idea of what normally happens, what is allowed to happen (through filtering and blocking rules), it is pretty much impossible to say.  Even if you really know your network, often it takes very in depth analysis to get down to the root of a performance issue.

Author

Commented:
Well, I would rule out the server because local users and a few remote sites do not have the same problem. We have stumbled upon an issue with our provider in that we found that we were not actually utilizing the full potential of the port speed. We did just purchase a Sniffer, so it's probably going to be our best tool by looking at the traffic coming and going on the network.

Thanks for your help on this.

Commented:
Yes, that will be a huge help.  You may find that you have a lot of "extracurricular" activity going on.  

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