Am 29.08.2012 13:05, schrieb Mike: > On 12-08-29 08:01 AM, Bernhard Schmidt wrote: > >> We suspect (and verified with an internal client with custom rDNS) >> that the _msdcs entry is at fault. This hostname does not seem to get >> accepted. As soon as I remove the '_' it works fine. >> > > Have a read: > > http://en.wikipedia.org/wiki/Hostname#Restrictions_on_valid_host_names
| While a hostname may not contain other characters, such as the | underscore character (_), other DNS names may contain the | underscore.[2] gc._msdcs.geotechnik.rwth-aachen.de To my understanding, the *hostname* is defined to be the first label. This only contains alphanumeric characters in this case (gc). The _msdcs in the following label is perfectly valid. The only question is whether the FQDN of a host may contain '_'. I could not find any answer to that question so far. Bernhard
