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Outlook Anywhere is not working externally

I installed RPC, enabled Outlook Anywhere, got a valid SSL certificate. I did everything here

i tested https://mail.domain.com/rpc and got prompt box and canceled it and would see the valid certificate.

I tested internally using Outlook 2003 and it works perfectly as it is supposed to. i check Connection Status of Outllook and connection is HTTPS.

the problem is externally it won't work. Outlook did give me a prompt box to enter loginid and password, entered that and few seconds later it would return "The connection to the Microsoft Exchange Server is unavailable. Outlook must be online or connected to complete this action".

is this DNS problem or i know i am getting closed but not quite working? any input or help is appricated.
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1 Solution
What ports on the router do you have open?
Like port 443?
cuc888Author Commented:
yes, port 443 is open
cuc888Author Commented:
when i run
Test-OutlookWebServices -Identity administrator | format-list, the only erro i got is below
id: 1005
type: error
message: when accessing https//mail.domainname.local/autodiscover/autodiscover.xml the error "RemoteCertificateNameMismatch:...." was reported.

the CN of my certificate is correct.
have you configured the Configure the RPC proxy server to use specific ports?

I've done this once before and I found this link really useful


Download this tool as well to configure this


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