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- Newsgroups: comp.mail.misc
- Path: sparky!uunet!cs.utexas.edu!torn!newshub.ccs.yorku.ca!yorku.ca!davecb
- From: davecb@nexus.yorku.ca (David Collier-Brown)
- Subject: Re: Return-Receipt-To & forwarding...
- Message-ID: <davecb.726001056@yorku.ca>
- Sender: news@newshub.ccs.yorku.ca (USENET News System)
- Organization: York University
- References: <1i37tlINN61p@gaia.ucs.orst.edu>
- Date: Sat, 2 Jan 1993 18:57:36 GMT
- Lines: 41
-
- stanley@skyking.OCE.ORST.EDU (John Stanley) writes:
- |Even should this be true, here is a very real instance of mail being
- |sent and nothing being received as an error:
-
- | I send mail to a system that is down.
-
- | Three days go by...
-
- | The far end sends an error.
-
- | In the intervening three
- | days, however, the disk controller of my mailhost lets the
- | smoke out of one of the smoke containers. Being Christmas Eve,
- | it isn't fixed for four days.
-
- | Did the mail I sent get through? No.
- | Did I get an error response? No.
- | Has this ever happened? Yes.
- | Do I treat mail as being reliable? Ha. Ha.
-
- I tend to assume a normal operations secedule of backups when I
- discuss mailhubs. Yes, other things can interfere with mail. In my
- case, a Dash-10 can drop through the roof of my building (I'm under a
- landing slope, see) and take out everything.
- However, I'm discussing mail, not acts of god. Problems outside
- the mail system and/or protocol get dealt with by solutions outside
- the system and/or protocol.
-
- My operator restores the backup that cron took, and the mailer
- delivers the bounce message. Several days late.
-
- By the way, we run a 7-day expirey period, just to deal with probabalistic
- latency problems like that.
-
- --dave
-
- --
- David Collier-Brown, | davecb@CCS.YorkU.CA | lethe!dave
- 72 Abitibi Ave., |
- Willowdale, Ontario, | York Postmaster and
- CANADA. 416-223-8968 | occasional sendfail(8) consultant.
-