From: Grant Taylor
Date: 2007-03-31 15:34:58 -0400
Subject: Re: Does such a milter exist...
More information..: http://www.milter.info/#Support
Anthony Howe wrote:
> You could test this with milter-cli and a script. You could also try
> forcing sendmail into one message one recipient mode by specifying the
> max. number of recipients of 1. It should force the sending mailer to
> split out envelopes or take a long time to deliver a message destined to
> many people at the same site.
I may consider Milter-CLI. However I really do not like the idea of
only limiting all messages to one recipient per message.
> As someone else already said. Sounds a lot like grey-listing.
No. Let me try to figure out how to explain that this is not at all
like grey listing.
Grey listing is a function of temporarily failing senders, possibly in
conjunction with recipient(s).
What I am wanting is to temporarily fail recipients based on the
criteria of what OTHER recipients have been specified for a given
envelope. Let's say that there is a group of protected email addresses
that includes postmaster@, abuse@, root@, etc. Members of this group
will only (successfully) receive emails if the envelope recipients for
given messages are members of this group. If an envelope recipient is
not a member of this group, the recipient temp failed thus causing the
sending server to retry said recipient at another time. Or if an
envelope recipient that is not a member of this group is specified first
and then an envelope recipient that is a member of this group is
specified the envelope recipient is temporarily failed.
The main difference between what I am proposing and grey listing is that
grey listing is based on memory of previous envelopes and what I am
proposing is based on envelope recipients of the current envelope.
Granted grey listing and what I am proposing both temp fail some
recipients, but the way they decide to do it or not is completely
different based on a completely different set of criteria.
Grant. . . .
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