I am using outlook 2010 the automatic replies function prompt error. " Your automatic reply settings cannot be displayed because the server is currently unavailable. Try again later. My domain is staff.domain.local and external url link webmail.domain.com. external party SSL is *.domain.com . I want to know how solve the problem.

Your problem is almost certainly with the SSL certificate. If you are using a .local domain internally and you only have a wildcard SSL certificate then things are not going to work correctly unless you change your DNS so the public names resolve internally and then change all of the Exchange configuration for web services, Autodiscover etc to use a host name that works with your public certificate. A wildcard certificate is NOT the same as a multiple domain, aka unified communications, aka subject alternative name certificate. Simon.Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.

I changed all internal link to same as public dns name. But also have the problem.

Do the names you have changed it to resolve internally to the Exchange server? Changing the names is not enough. Simon.Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.

Using a wildcard certificate in Exchange is not recommended. Outlook looks for an entry on both your local and external dns names. I would recommending changing it out for a SAN certificate. ( http://www.digicert.com/subject-alternative-name.htm )-- Jeremy McSpadden Flux Labs