nanog mailing list archives
Re: Postmaster 'best practices' query
From: Gregory Hicks <ghicks () cadence com>
Date: Mon, 22 Oct 2001 10:28:38 -0700 (PDT)
From: David Lesher <wb8foz () nrk com> Date: Mon, 22 Oct 2001 10:33:56 -0400 (EDT) A query to help educate me. Feel free to flame away; the week is young. Every site should accept/respond to "postmaster" -- T/F?
True. Required by RFC 822, para 6.3 "Reserved Address" and discussed by RFC 2142 and RFC 2821. Although RFC 822 does not specify "sites running mail", 2142 does, in fact, specify that <postmaster> must exist "...on all hosts that have an SMTP server." Although RFC 2142 says this, further reading of the RFC and supporting RFCs implies that the "domain-name" must accept mail to <postmaster@domain-name> and forward to the proper person/mailbox. So I guess, if you are the proud owner of a domain, you must have routing that supports <postmaster@domain>..." In other words, ... Connected to the internet with a domain name? Must have a <postmaster> mailbox.
Or is it "Every site running mail"....
The RFC states
Or every box running mail?
RFC states " on all hosts that have an SMTP server..."
IOW: Which of the following are required vice recommended vice best practives, etc. a) postmaster () example com b) postmaster () mail example com c) postmaster () wizzbang example com d) postmaster () pop example com e) postmaster () cisco example com
They should all be recognized *IF* each of these boxes run SMTP. <postmaster () example com> should be recognized in any case. Best practice? I define postmaster == root == some person or group of persons. Does everyone do this? Nope! Not by a long shot. I get flak over the policy. I can categorically state, however, that the machines where I get mail from root seem to have less problems than those where root mail is ignored. Does this definition result in some unwanted email? Yep. But, the one message that says "I found this problem, please fix." is worth all the chaff that just get deleted. This is especially true when the problem causes the machine to die in such a fashion that it cannot be restarted in a 'sane' manner and the only clue is a message from root... YMMV.
and most important to me: where to I go to justify the decisions on same?
Depends on the services you offer:
Current thread:
- Postmaster 'best practices' query David Lesher (Oct 22)
- Re: Postmaster 'best practices' query Ryan O'Connell (Oct 22)
- Re: Postmaster 'best practices' query Brett Frankenberger (Oct 22)
- Re: Postmaster 'best practices' query Peter van Dijk (Oct 22)
- Re: Postmaster 'best practices' query David Howe (Oct 23)
- Re: Postmaster 'best practices' query Gary E. Miller (Oct 23)
- Re: Postmaster 'best practices' query Peter van Dijk (Oct 22)
- Re: Postmaster 'best practices' query Gary E. Miller (Oct 22)
- Re: Postmaster 'best practices' query Jim Duncan (Oct 22)
- <Possible follow-ups>
- Re: Postmaster 'best practices' query Steven M. Bellovin (Oct 22)
- Re: Postmaster 'best practices' query Steven M. Bellovin (Oct 22)
- Re: Postmaster 'best practices' query Gregory Hicks (Oct 22)
- Fwd: Re: Postmaster 'best practices' query Rodney Thayer (Oct 22)
- RE: Re: Postmaster 'best practices' query Mike Batchelor (Oct 23)