Have just installed a certificate from GODADDY as we couldn't get RPC over HTTP working through self signed and were told this might be the issue but Outlook still won't connect. After running the test connectivity tool from MS i get the following:
Attempting to ping RPC Endpoint 6001 (Exchange Information Store) on server server.domain.co.uk
Failed to ping Endpoint
Exchange is 2007 version 08.02.0176.002 so i don't think the RU4 will help and i have tried disabling IVP6 and doing the HOSTS entries as per Microsoft but still comes up with the error above.
This is an Exchange 2007 setup on a new Server 2008 box installed into an SBS2003 enviroment. The Exchange server is not authoritive for the email domain and so we have purchased a second domain to point DNS (autodiscover, owa etc) to the Exchange server and it POP3's from the main domain in the USA.
Any help would be great.