Outlook & Exchange synchronisation fails over VPN

[stotters]

Hello,

We're using Exchange 5.5 with latest service pack on NT4 sp6.

We have a Symantec Raptor Firewall and have setup VPN access
for remote users to use Outlook through the VPN to access Exchange. Remote
users are using offline folders and synchronise with Exchange when
connected.

All this seems to work fine, if a little slow, except when there is mail
(created
offline by the remote user) in the Outbox. In this case the synchronisation
fails and produces the following message in the synchronisation log.

I've been to the Microsoft URL suggested in the message but is doesn't
help with this particular problem.

Hope someone can help.
Stotters

21:30:02 Synchronizing Mailbox 'User Last Name, User First Name '

21:30:04 Sending offline mail

21:31:06 Error sending message

21:31:06 [80040115-514-0-0]

21:31:06 Network problems are preventing connection to the Microsoft
Exchange Server computer.

21:31:06 Microsoft Exchange Server Information Store

21:31:06 For more information on this failure, click the URL below:

21:31:06
http://www.microsoft.com/support/prodredirect/outlook2000_us.asp?err=8004011
5-514-0-0

21:31:38 Synchronizing Folder 'Calendar'

21:31:45 1 item(s) updated in online folder

21:31:45 Synchronizing Views

21:31:47 Done

21:31:48 Microsoft Exchange offline address book

21:31:48 Download successful

[Michael Abbaticchio]

Most broadband providers throttle the upstream throughput for user's.
Downloaded stuff is much quicker. When users have stuff to send, especially
with relatively large attachments, they are subject to timeouts, waiting for
the upload to happen. The best thing you could is ensure there are no MTU
mismatches, although these problems seem to have been remedied in the latest
MS OS's.

--
regards,
Michael Abbaticchio
Microsoft Exchange Server MVP
http://www.exchangemvp.com

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"stotters" <stot...@hotmail.com> wrote in message
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