From owner-freebsd-questions  Tue Sep 11  3: 3:39 2001
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Date: Tue, 11 Sep 2001 11:05:08 +0100
From: setantae <setantae@shaft.techsupport.co.uk>
To: postmaster@FreeBSD.org
Cc: freebsd-questions@FreeBSD.org
Subject: Why, this is new (and BAD, BAD, BAD!!) ...
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[ceri@cartman ceri]$ exim -v -qf
Single queue run
LOG: 0 MAIN
  Start queue run: pid=4239 -qf
delivering message 15gkCn-000135-00 (queue run pid 4239 fd 5)
Connecting to hub.freebsd.org [216.136.204.18.25] ... connected
  SMTP<< 220 hub.freebsd.org ESMTP Postfix (Postfix Rules!)
  SMTP>> EHLO cartman.private.techsupport.co.uk
  SMTP<< 250-hub.freebsd.org
         250-PIPELINING
         250-SIZE 10240000
         250-ETRN
         250 8BITMIME
  SMTP>> MAIL FROM:<ceri@techsupport.co.uk> SIZE=2537
  SMTP>> RCPT TO:<freebsd-questions@freebsd.org>
  SMTP>> DATA
  SMTP<< 250 Ok
  SMTP<< 450 <cartman.private.techsupport.co.uk>: Helo command rejected: Host not found
  SMTP<< 554 Error: no valid recipients
  SMTP>> QUIT
LOG: 0 MAIN
  == freebsd-questions@FreeBSD.ORG T=remote_smtp defer (0): SMTP error from remote mailer after RCPT TO:<freebsd-qu
estions@freebsd.org>: host hub.freebsd.org [216.136.204.18]: 450 <cartman.private.techsupport.co.uk>: Helo command
rejected: Host not found
LOG: 0 MAIN
  End queue run: pid=4239 -qf

So exactly how am I supposed to use a mail server that happens to be behind a
firewall ? Make it lie about it's hostname in the EHLO line ?

The IP that I come out of (194.168.3.4) has both forward and reverse DNS set
up, which up until this morning was sufficient.

RFC 1123 prohibits HELO-based rejections.

Thank you ,

Ceri

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