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- Path: sparky!uunet!decwrl!infopiz!mccall!ipmdf-newsgate!list
- Newsgroups: vmsnet.mail.pmdf
- Subject: RE: Reverse-rewriting an empty From:-header
- Message-ID: <01GPN50T49VQ9TCNK7@INNOSOFT.COM>
- From: Ned Freed <ned@innosoft.com>
- Date: 06 Oct 1992 21:10:00 -0700 (PDT)
- Organization: The Internet
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-
- > I sometimes see ``service messages'' from Message Router which produce
- > mail with empty From:-headers. My first thought was to rewrite such
- > empty From:-headers so that the mail came from the postmaster.
-
- > (1) Is this a good idea?
-
- This should be handled in the FROM_MR.TXT file. There is a special hook ($E)
- for handling empty addresses.
-
- The envelope address should be left blank. This is perfectly legal and
- proper for service messages.
-
- > (2) If so, can I do it with the REVERSE mapping? I haven't been able to
- > figure it out so far.
-
- Nope, it is not possible to create an address out of nothing using the
- reversal database.
-
- > (3) Is there some way to prevent this ``empty From:-header'' situation
- > from arising in the first place?
-
- Use the $E rule properly.
-
- > (4) What's the prospect on standardization on the format of these
- > Service messages?
-
- Practically none. Message Router does not do return of contents. The Internet
- world pretty much demands return of content, and this demand is very likely to
- extend to any future standardization of error message return formats. It
- certainly applies now to the current format recommended by Nathaniel
- Borenstein's RFC that covers this.
-
- The prospects are slightly brighter if you don't consider the return of
- content issue, but given the fact that the IETF people dealing with
- mail are currently stuck dealing with SMTP extensions, I would not hold my
- breath waiting for something to come out in this area.
-
- Ned
-
-