I've been testing OWA and Outlook Anywhere publishing (including
autodiscovery) in a test lab and I have the following issue:
OWA works fine but Autodiscovery and Outlook Anywhere don't work from the
Internet.

This is the setup:
ISA server - single NIC, workgroup, in DMZ, used for publishing only, LDAP
authentication
additional edge firewall
Exchange 2007 - mailbox, HT and CAS role

Autodiscovery works internally but Outlook Anywhere does not work from the
LAN nor from Internet.
RPCping troubleshooting gives me a "successfully completed result" but the
ISA logs give me results like
Status: 12239 Server requires authorization. Access to web server denied.
Status: 0x80004005
This is the result when testing autodiscovery from the Internet.
As already mentionned there are no issues with OWA (from the LAN or
Internet)4
The account I use for testing also works. I've already checked the
troubleshooting post on the ISA team blog.

Any help would be really appreciated
Sven

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