RE: Exchange mail over the WAN

  • From: "Andrea Coppini" <andreacoppini@xxxxxxxx>
  • To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx>
  • Date: Wed, 9 Oct 2002 00:38:05 +0200

Hey Tony,

We're in a similar situation.  Our Exchange server has always been in
our Malta office, and our only link to our German office and VPN users
is a 512k internet link.

One solution that has _HELPED_ improve performance is having the users
work offline and synchronize every 15-30 minutes.  This way they open
e-mails from their local OST files, practically like having a PST-based

A word of warning though, working offline and synchronizing is not as
robust as working online.  If the VPN/Frame link goes down or there are
lots of lost packets half way through a sync, Outlook almost never
recovers and needs to be 'End Task'ed... No big deal, but can be a bit
of a pain

-----Original Message-----
From: Tony Parks [mailto:tony.parks@xxxxxxx] 
Sent: 08 October 2002 6:56 PM
To: [ExchangeList]
Subject: [exchangelist] Exchange mail over the WAN

We have recently embarked on a cost savings project that entails locally
housing and servicing our email servers in the U.S. We had several local
servers in the ASIA and European regions that were moved to the
headquarters office in the U.S. Obviously we knew that the performance
would be somewhat degraded because of the move from a LAN attached
server to a WAN attached server. We are receiving several complaints
from our clients that the speeds to open an email are extremely slow. An
email with an attachment is almost "snail mail".

Has anyone else experienced moving from a LAN email service to providing
the service over the WAN? What are some of the expectations and how can
you address the slow downs. The current WAN network consists of frame
relay, leased line, and VPN connections into the headquarters office
from our remote sites. Are there any performance enhancing capabilities
in Exchange or are we stuck with the latency of the WAN network?

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Andrea Coppini
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