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Re: Underscores in host names
On Wed, 18 May 2005, David A. Ulevitch wrote:
Read 2.3.5 of RFC2821 and note that "A domain (or domain name) consists of one or more dot-separated components".ws has an MX record. host -t mx ws. ==> mail.worldsite.ws Most MUA's (unix ones tended to work, not surprisingly) complain or break on "send" but technically it works. :)
So technically its not supposed to work, but not everyone is compliant with standards...