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- Newsgroups: comp.sys.sgi
- Path: sparky!uunet!elroy.jpl.nasa.gov!ames!sgi!nimrod.wpd.sgi.com!roberts
- From: roberts@nimrod.wpd.sgi.com (roberts)
- Subject: Re: Mail ingenuity
- Message-ID: <progv5s@sgi.sgi.com>
- Sender: roberts@nimrod.wpd.sgi.com
- Organization: Silicon Graphics, Inc. Mountain View, CA
- Date: Mon, 14 Sep 1992 21:01:49 GMT
- Lines: 36
-
- zsd@axe.drea.dnd.ca (Jim Diamond) asks:
-
- > So: what black magic does Mail or sendmail (or whomever) use to
- > associate "edison.adm.tuns.ca" with "tuns.ca"?
-
- Sendmail uses MX (Mail eXchanger) records to do its magic.
-
- Notice:
-
- 1 nslookup
- Default Server: sgi
- Address: 0.0.0.0
-
- > set q=mx
- > tuns.ca.
- Server: sgi
- Address: 0.0.0.0
-
- tuns.ca preference = 10, mail exchanger = edison.adm.tuns.ca
- edison.adm.tuns.ca internet address = 134.190.1.7
-
- The result of the MX record query tells us to send mail for "tuns.ca" to
- "edison.adm.tuns.ca" for further disposition.
-
- MX records are part of the DNS system and are described in chapter 3 of the
- IRIX Network Administration Guide (Document Number 007-1437-010).
- Also see: RFC-974 Mail Routing and the Domain System.
-
- > Why can't these other
- > network programs do the same?
-
- Because it would be wrong. MX records can only be used for mail routing.
-
- - Robert Stephens
- Silicon Graphics Inc.
-
-