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This just recently happened and I'm not quite sure what could have caused it. Whenever I now set up a new computer at the office, I log on with that user and start Outlook. Previousy the mail profile is set up automatically when first starting Outlook. But now, I get the error message "Connection to Microsoft Exchange is not available"

But if I click OK I get the option to control the server settings and the username. And strangely if I replace the server name with the actual IP address for the email server, it gets the username immediatly and everything is all well. Also, the IP address for the server name is then replaced with the exact same server name as it was prior to entering the IP address, only the server name has an underline in it.

I though, well this has to be a DNS issue but I don't think so as well. The DNS lookup looks just fine and there are no multiple DNS entries for that server name.

Any idea?

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Are you using the server's fully-qualified domain name, or just the name without the suffix? If it's the single-label name, does the client have a correct DNS search suffix? –  Shane Madden Nov 10 '11 at 6:45
Yes, the full name with the suffix is already there. Like "servername.domain.local" and when I enter the IP address and try to resolve the name, the exact same servername is replaced with the IP address, only with a line under the whole server name. How can I test if the client has the correct DNS search suffix? –  Kenny Bones Nov 10 '11 at 6:49
run ipconfig/all from a command prompt on the client. –  joeqwerty Nov 10 '11 at 11:36
DNS-suffix is the domain name, e.g domain.local. The same as what's in the server name when creating a new email profile, e.g mailserver.domain.local. –  Kenny Bones Nov 10 '11 at 11:40
This sounds like either a DNS problem or an Autodiscover problem. –  joeqwerty Nov 10 '11 at 11:53

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