Relaying? allow user to send mail through our exchange server?

have a client running ISA and Exchange 2003. some users was to check mail pop and also send mail.
We are ok with them checking mail with pop but do not want to allow them to send mail through the server from outside of the network?
Any thoughts on the best solution?
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PCLANTECHSAsked:
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patelbg2001Commented:
setup rpc over http if you have an isa server and an Ex03 server, you plan and implement this solution... would be better than using pop... and all emails go through your exchange environment.
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PCLANTECHSAuthor Commented:
interesting. we already have RPC over HTTP setup however we are having difficulties getting the client (MS Outlook 2003) to connect.
I have followed Simbees directions on his website and just cannot get it working?
when I type in https://mail.domain.com/rpc and enter the user name I cannot authenticate to get the 403 error (I think thats the right code you are suppose to get) code?
Thanks in advance for your participation.
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patelbg2001Commented:
I don't think you would be able to connect using https://mail.domain.com/rpc, you should get an access denied. Are you using EX07 or Ex03??... what version of ISA are you using.  Also did you view the msexchange.org articles before implementation?.

http://www.msexchange.org/
http://www.msexchange.org/articles_tutorials/exchange-server-2003/mobility-client-access/
http://www.msexchange.org/tutorials/Exchange-2003-Http-Access-Part1.html
http://www.msexchange.org/tutorials/Exchange-2003-Http-Access-Part2.html
http://www.msexchange.org/tutorials/outlookrpchttp.html
http://www.msexchange.org/tutorials/pubowa2003part1.html
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PCLANTECHSAuthor Commented:
Hi we are using Exchange 2003 with ISA 2004. Have gone through the docs below and still not able to get it working?
Were it asks for the server name the doc above state we should use what ever the certificate is under. Our cert is publishing.domain.com
under the domain we have been putting mail.domain.com
Any other ideas?
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patelbg2001Commented:
Where is your outlook client connecting from ?? if it external, can you connect within the DMZ zone.  you fqdn publishing.domain.com is that resolvable to an IP addresse externally to DMZ and then  resolvable in the DMZ to an internal EX03 server???
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PCLANTECHSAuthor Commented:
our client is trying to connect from the external. Maybe its best if I better describe exactly the current setup.

We are able to access owa by using the following address.
OWA> https://mail.domain.com/exchange
This is the only way we are able to access the server as we also are able to access for remote desktop client.
RDC> https://mail.domain.com/remote
When browsing to these locations using IE7 we get the first page stating:
"There is a problem with this website's security certificate.
The security certificate presented by this website was not issued by a trusted certificate authority.
Security certificate problems may indicate an attempt to fool you or intercept any data you send to the server."
I have checked and confirmed the certificate settings under IIS website/exchange and it say they are fine.
The certificate address is: publishing.domain.local

Does this help any?


 
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PCLANTECHSAuthor Commented:
Eventhough we were unable to during this question get the RPC over HTTP working properly you still were quick to respond with the correct solution.
Thanks
FYI: we have opened another question directed in the diagnosis and resolution to get rcp over http working.
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