also sprach Russ Allbery <[EMAIL PROTECTED]> [2007.10.10.0024 +0100]: > The only thing RFC 821 cares about is what hostnames you use in > MAIL FROM and RCPT TO. If you can ensure that your mail setup > uses the canonical name rather than the alias in the RHS of > addresses in MAIL FROM, that will make the problem go away without > changing your DNS.
Of course I can ensure that, and that's what I had a while ago: for each of my road-warriors (rw.madduck.net; 19 of them; no, not all laptops; long story), I had a separate pair of MX RRs. I sought to simplify that and created rw.madduck.net with two MX RRs and CNAMEd the 19 domain names to that, *after* reading the RFCs and determining that it was okay (but reading RFC2821 as having obsoleted STD-010; your argument makes sense though). I'd much rather change my DNS than configure the 19 machines to use the same mail-from-domain. Thanks for this thread, which showed me that apparently this is what I have to do. I can't believe DNS (or SMTP for that matter) hasn't moved along in decades... at least not since people started to understand that data redundancy (not caching!) is a bad thing. Sorry for the noise on d-devel. -- .''`. martin f. krafft <[EMAIL PROTECTED]> : :' : proud Debian developer, author, administrator, and user `. `'` http://people.debian.org/~madduck - http://debiansystem.info `- Debian - when you have better things to do than fixing systems "the only difference between the saint and the sinner is that every saint has a past and every sinner has a future." -- oscar wilde
digital_signature_gpg.asc
Description: Digital signature (see http://martin-krafft.net/gpg/)
