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Do you have two MX records with each server? If so, is the one the 2003 on the lowest?<br />
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if one MX record, is it pointing to the 5.5 server, if so change it to the 2003 one.
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Do you have two MX records with each server? If so, is the one the 2003 on the lowest?

if one MX record, is it pointing to the 5.5 server, if so change it to the 2003 one.

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APologies I should have made my question more clear. The issue is with ougoing external email. Incoming email is fine. The Public MX records cater for the incoming email. Do you think that the the internal DNS records will rectify the issue? 
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APologies I should have made my question more clear. The issue is with ougoing external email. Incoming email is fine. The Public MX records cater for the incoming email. Do you think that the the internal DNS records will rectify the issue?

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Hi,<br />
We have a mixed enviroment with 5.5 and 2003 servers. We have 1 organisation and 2 sites. The servers are the following roles.<br />
Ex5.5 mailbox<br />
Ex5.5 Bridgehead<br />
Ex2003 mailbox<br />
Ex2003 Bridgehead<br />
At the moment all internal email goes through the Ex2003 bridgehead but external email goes thorugh the Ex5.5 bridgehead even if I shut it down. Is it possibel to route SMTP email via the Ex2003 bridgeghead while keeping the Ex5.5 servers in place?<br />

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Hi,
We have a mixed enviroment with 5.5 and 2003 servers. We have 1 organisation and 2 sites. The servers are the following roles.
Ex5.5 mailbox
Ex5.5 Bridgehead
Ex2003 mailbox
Ex2003 Bridgehead
At the moment all internal email goes through the Ex2003 bridgehead but external email goes thorugh the Ex5.5 bridgehead even if I shut it down. Is it possibel to route SMTP email via the Ex2003 bridgeghead while keeping the Ex5.5 servers in place?


Exchange 5.5 and 2003 email routing

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.