Here is the relevant portion in regard to
ports.
HTTP access from Outlook
When used with the Microsoft
Windows Server™ 2003 RPC Proxy Service and Exchange 2003, Outlook 2003
clients can connect simply using HTTP or HTTPS, thereby reducing the need for
virtual private networks (VPNs) or dial-up remote access. If remote users only
need to gain access to corporate messaging information, your IT department does
not need to deploy VPN infrastructure. VPN-less access reduces costs and
provides for increased security by ensuring that remote Outlook users don’t need
access to the entire network. This unifies the connection methods also found in
Microsoft Office Outlook Web Access and Outlook Mobile Access.
Don Bosman
Information Technologist
Michigan State University Libraries
517-432-6123 ext 233
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