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From: Makey@Logicon.COM (Jeff Makey)
Newsgroups: comp.mail.sendmail
Subject: Re: Hiding behind NIC hosts
Message-ID: <762@logicon.com>
Date: 4 Sep 90 21:53:58 GMT
References: <7891@helios.TAMU.EDU> <18254@ucsd.Edu>
Distribution: na
Organization: Logicon, Inc., San Diego, California
Lines: 22

In article <18254@ucsd.Edu> brian@ucsd.Edu (Brian Kantor) writes:
>There aren't any .ARPA hosts any more

This is a popular myth.  While it is true that hosts in the .ARPA
domain are being renamed to other domains, the process is not yet
complete.  There are currently about 100 hosts whose primary names
end with .ARPA.  Almost all of these holdouts are MILNET hosts
with .NAVY.MIL aliases, but I noted one or two entries in HOSTS.TXT
with only .ARPA names.  In addition, there are about 800 hosts with
non-.ARPA primary names that maintain .ARPA aliases.

To answer the original question, it should be plenty safe to remove
the sendmail.cf rule that rewrites "user@subdomain.host.arpa" as
"user%subdomain@host.arpa" unless you know of a specific case in which
this is required (I actually benefited from the rule once when my host
was named LOGICON.ARPA).

                           :: Jeff Makey

Department of Tautological Pleonasms and Superfluous Redundancies Department
    Disclaimer: All opinions are strictly those of the author.
    Internet: Makey@Logicon.COM    UUCP: {nosc,ucsd}!logicon.com!Makey