On Mon, 02 Dec 1996 11:37:03 +0002,
syoung(_at_)actcom(_dot_)co(_dot_)il said:
S> I looked at RFC-822 and saw that an email address must look like this:
S> (word)*("." (word))@(subdomain)*("."(subdomain))
S> Where can I find out which _characters_ are allowed in (word) and
S> (subdomain)? I didn't see any reference to this question in RFC-822.
We recently set up our own DNS domain, and the folks at our network center
told us that the root domains were starting to enforce stricter naming
standards. Host and subdomain names had to consist of [A-Za-z0-9-] ONLY,
and they could not be all numbers. This caused us some problems because the
underscore was not on the approved list, so all of our PCs had to be
renamed.
--
Karl Vogel
vogelke(_at_)c17(_dot_)wpafb(_dot_)af(_dot_)mil
Control Data Systems, Inc. ASC/YCOA, Wright-Patterson AFB, OH 45433