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Microsoft host namse and DNS

Posted on 2006-11-01
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Last Modified: 2010-07-27
Microsoft is saying that you can no longer use _ in a host name pc_03. Can this really make problems in DNS or is this something that Microsoft wants us not doing because they are not sure of the outcome of this?
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Question by:fischerbob
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That's more a "should" than a "can not". A Microsoft DNS server running W2k or later won't mind, but technically, the underscore isn't allowed in DNS host names (see RFC 1035). So if you have old machines which have underscores in their names, there should be no problems as far as DNS is concerned, but you should avoid it for fresh installs.
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