When trying to set out of office from Outlook 2010, it prompts with error, server is unavailable.
All other 50 users within the site are not experiencing this issue. We have exchange 2010, latest service pack. His account will work on other devices and will work on OWA. Troubleshooting his desktop, it seems to point to a DNS issue, but unsure why he cannot successfully lookup the autodiscover record.
Tried manual hosts entries, different dns servers, outside dns servers, and nothing will allow him to "find" the autodiscover record. When using a .hosts file, the cert from the firewall is shown rather than the exchange server.
What could be causing this one Windows 7 pro PC to behave like this?