XP Pro slow on network with Outlook email / sometimes fails

F

Fred Marshall

I'm working with a couple of small LANs that are challenging.
The machines are kept up to date re: Windows Updates, virus files, etc.
(More background information below).

There is a problem with the XP Pro machines that seems to have just started
up by itself over the last few weeks:

XP Pro with Outlook 2003 machine: sometimes Receiving email fails. Less
often, sending email fails. A dialog asking for the username and password
pops up (already filled in with the necessary information) - so all is
needed is to tell it to proceed / OK.... But, when this happens it can
happen over and over and over again. It's very annoying and disruptive. As
you can imagine, the failures are accompanied by a delay of some length.

When email Send and Receive works on this computer, the Send and Receive
seem to respond sometimes very quickly and sometimes no so quickly.

One user reports that opening Internet Explorer will clear the problem.
I've not worked to confirm this.

email is served by an outside ISP. Each user has a separate email account
with the ISP. The ISP isn't able to offer much in the way of suggestion.

I conclude from this:

1) this problem is isolated to Windows XP Pro
2) the passwords / email setup is fine because it often works.
3) there appears to be a timeout problem but I can't find where that might
be. I've set the Outlook timeouts I could find to be long. No change in
behavior.

One question would be:

Why would Outlook and the network sometimes be very fast and other times be
very slow in establishing a connection for email Receiving or Sending?

Thanks in advance,

Fred

Background info:
- The LANs are connected to the internet so all computers naturally have
TCP/IP.
- There is a server on the LAN that requires IPX.
- The computers are mixed between Win2K and XP Pro.
- There is a CISCO router on the LAN that provides connectivity to a private
TCP/IP network in a separate address range. This router's IP address is
specified as the gateway on the clients.
- We have added the internet gateway as a secondary gateway on some clients
(to see if it makes a difference).

So, all the computers have TCP/IP IPX installed - and probably NetBEUI
except for most of the XP Pro machines.

In general, everything works fine. All applications and connnections work
and the speeds are acceptable.

- All of the clients use one version or another of Outlook (not Outlook
Express) for email.
 
F

Fred Marshall

The ISP is reasonably reliable.
And, none of the other computers on the LAN with this same ISP have this
problem.....
 
J

Jetro

My Rogers is reliable ISP, but recently this company has joined forces with
Yahoo! "to offer a better Internet experience" and this nightmare is
continuing three weeks already while the guys have been switching DNS and
email servers. The problems started out of the blue without any systematic
data to analyse and it didn't finished yet. The picture is as vivid as
you've described: Outlooks ask password, then get timed out; this could
continue a few hours, then everything returns to normal... Or Outlooks
cannot fetch the emails until I delete the messages using web portal and so
on.
 

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