Re: Outlook using HTTP/RPC to Exchange

From: Ben Winzenz [Exchange MVP] (benwinzenz_at_NOSPAM.gardnerwhite.com)
Date: 02/23/04 

Date: Mon, 23 Feb 2004 13:53:37 -0500

Are the profiles for those clients already set up? if not, remember that in
order to set up the profile (connect for the first time), you have to allow
NetBIOS connections. In this case, it may be easiest to simply VPN in to
set up the initial connection, then try and connect via RPC/HTTP. 

-- 
Ben Winzenz
MVP - Exchange
Network Engineer
Gardner & White
http://www.techtidbits.net
Exchange FAQ's: http://www.swinc.com/resource/exch_faq.htm
Exchange 2000 FAQ's: http://www.swinc.com/resource/e2kfaq.htm
"Richard Fennell" <richard@blackmarble.co.uk> wrote in message
news:%23PMFNfY%23DHA.2592@TK2MSFTNGP10.phx.gbl...
> I am trying to get Outlook 2003 to connect to my Exchange 2003 server via
> HTTP/RPC.
>
> If I am on my company LAN it all works fine (via HTTP and TCP depending
> whether I set the use HTTP on fast networks option).
>
> The problem I have is from the internet via our firewall, the client tries
> to connect but never get connected.
>
> I can connect to the same server via OWA without any problems, so the
> SSL/HTTPS ports are opened OK on the firewall.
>
> I have done a protocol trace and there client appears starts a
converstation
> with the server OK, on a LAN working connection it starts with TCP frames
> then changes to MSRPC frames, on the failing external connection this
change
> never happens, but the start of the conversation looks simialr (same size
> frames is about the best you can get due to the SLL)
>
> In the trace I also see, on the failing connection, some NetBios name
> requests for our internal sever name, making me thing the problem lies in
> name resolution.
>
> Has any seen similar problems? or have a solution?
>
> Richard
>
>
>

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