SBS 2008 RPC over HTTP email

Hi,

I have been using Outlook anywhere feature of Outlook 2010 to connect my remote clients to the Exchange server. It has been working fine.

On a remote site everything has been working fine for a particular user for a couple of years. All of a sudden Outlook has been coming up with a screen in the last 2 days saying "Enter username and password". It will not accept the password at all. So I reset the user's password and even that won't work. I deleted the Outlook profile and created a new one but again it won't take the password. Then I tried to add a different email account and it works straightaway. The strange thing is that the questionable email account which does not work in Outlook works fine when I use OWA.

A couple of days back I have been experimenting with VPN on SBS 2008 and I might have changed something for that particular user. It might be related or not. I am not sure.

It has completely baffled me. WHere do I start looking?

Thanks
amitkheraAsked:
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tidupCommented:
Hi,

Can you check that => https://www.testexchangeconnectivity.com/
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amitkheraAuthor Commented:
Hi,

I have tested on the above website with the following results.
I have tested it for Outlook Anywhere RPC over HTTP.
I manually specified my RPC settings. I did not use the Autodiscover settings. It works fine for most email addresses.
But for this particular address it fails.
It says RPC/HTTP test failed.
"Attempting to ping RPC endpoint 6001 (Exchange Information Store) on server mydomain01.mydomain.local.
  The attempt to ping the endpoint failed.
"

The RPC_E_ACCESS_DENIED error (0x5) was thrown by the RPC Runtime process
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