North American Network Operators Group
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Re: Open Letter to D-Link about their NTP vandalism

  • From: Joe Maimon
  • Date: Wed Apr 12 08:14:34 2006 

Miquel van Smoorenburg wrote:


In article <[email protected]>,
Matt Ghali  <[email protected]> wrote:


.or do you think that TCP/IP connection
should be held open until the message can be scanned for spam and
viruses just so we can give a 550 MESSAGE REJECTED error instead of
silently dropping it?

absolutely. is that actually a problem, today, in 2006?

RCPT TO: <[email protected]>
RCPT TO: <[email protected]>
DATA
.

.. after content scanning, user1 wants the mail, user2 doesn't.
Now what ?

Mike.
Three choices

Screw user1
Screw user2
Screw sender by dropping user2 from recipient list

Its only on the third choice that you have to decide whether or not to notify the sender with a bounce.

A patched sendmail can prevent a milter from performing a reject of an email as requested by a milter, if some of the recipients do not want the protection offered.