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- Newsgroups: comp.mail.uucp
- Path: sparky!uunet!cs.utexas.edu!zaphod.mps.ohio-state.edu!howland.reston.ans.net!atlantis.psu.edu!barr
- From: barr@pop.psu.edu (David Barr)
- Subject: Re: Mixed format addresses
- Message-ID: <4=41Hw38_b@atlantis.psu.edu>
- Sender: news@atlantis.psu.edu (Usenet)
- Organization: Penn State Population Research Institute
- References: <5w43wB5w165w@willard.atl.ga.us> <1ilqa3INNhfh@wintermute.phys.psu.edu> <C0Lw2o.H82@wimsey.bc.ca> <C0pG4u.1Lx@nmrdc1.nmrdc.nnmc.navy.mil>
- Date: Tue, 12 Jan 93 01:35:44 GMT
- Lines: 36
-
- In article <C0pG4u.1Lx@nmrdc1.nmrdc.nnmc.navy.mil> rdc30@nmrdc1.nmrdc.nnmc.navy.mil (LCDR Michael E. Dobson) writes:
- >>[get FQDN]
- >That is not as easy as it sounds. There are thousands of UUCP sites who
- >are multiple hops from the Internet via multiple paths. The host that
- >eventually drops their mail into the Internet may be different for each
- >message.
-
- Perhaps, but this fact is irrelevant. The problem lies in routing
- and addressing for Internet->UUCP, not UUCP->Internet.
-
- >That host may be totally unaware that they are the connection.
- >In this case, what site acts as the MX?
-
- The closest agreeable site on the Internet.
-
- >The originating site only has an
- >agreement to exchange mail with it's neighbors. Now what?
-
- Huh? If the site has an agreement to exchange mail with its
- neighbors, then why is it allowing mail to go through its site to
- downstream hosts of its neighbors? If a site is this well connected,
- then I can't imagine them not agreeing to agree to one simple MX, and
- an entry in their mailer to say "mail to foo.bar.org goes to
- !neighbor!hop1!hop2!foo!%s". This is not rocket science, nor is it
- hard to maintain, unless you get into the hundreds of MX's. The
- beauty of this is that all this techical stuff is kept local to the
- sites involved with actually delivering the mail. If suddenly "hop2"
- becomes a neighbor, then the MX site can immediately change his
- mailer to say: "mail to foo.bar.org goes to !hop2!foo!%s" and all
- his mail will now take the new path. No more waiting weeks or months
- for everyone to update their pathalias databases.
-
- --Dave
- --
- System Administrator, Population Research Institute barr@pop.psu.edu
- What if there was no such thing as a hypothetical question?
-