Is dot valid in address for indicating absolute domain name?

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2 total messages Started by Brad Allen Wed, 14 Dec 1988 11:27

#637

Author: Brad Allen
Date: Wed, 14 Dec 1988 11:27

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Is "foo.baz.org." with the trailing dot mentioned in an RFC?  Is it
supposed to be standard?  Is it a standard?  Who likes it?  Should it
be used?  It denotes absolute (nonrelative) addressing to the local
systems I use when using a few of the net facilities.

(I have no affiliation, so ignore any implied organization)

Re: Is dot valid in address for indicating absolute domain name?

#638

Author: Craig F. Everhart
Date: Thu, 15 Dec 1988 16:51

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I believe that it's mentioned in the domain-system specs, which for interchange
purposes don't care if a name is suffixed with a dot or not.  Some programs that
act as user agents for the domain system use it to know whether to try appending
local suffixes or not; I don't believe that that usage is anywhere in an RFC.
One place that it's NOT is in RFC821 or RFC822; the mail address
``foo@bar.baz.'' is invalid RFC822.  You can't append a dot to an RFC822 domain
without invalidating it as an RFC822 domain.

                Craig Everhart

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