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Re: [clear] BATV on Postfix, on hold

2006-06-09 05:58:24
Thank you for the suggestions.  I've thought about how
to do something like BATV without changing the code.
The hashes could be calculated in advance and stored
in a map as you mentioned.

The closest I could come for outbound mail was using
the sender_canonical map, but that changes both the
envelope FROM and the FROM: mail header.  I only want
to change the envelope.

For arriving mail, the check could be done using an
external filter.

If anyone knows of a way to change just the envelope
FROM without changing the code, please let me know.

Best Regards,
Keith

--- Scott Kitterman <scott(_at_)kitterman(_dot_)com> wrote:

I think an alternative approach could be to use a
combination of external 
programs without touching the Postfix internals.

I think that one could use an external program to
generate a valid BATV 
address and place it in an appropriate map for
Postfix to re-write

http://www.postfix.org/ADDRESS_REWRITING_README.html

Then on the inbound side a policy service could be
used to check and determine 
if the message should be rejected

http://www.postfix.org/SMTPD_POLICY_README.html

Still not simple, but potentially doable without
patching Postfix internals.

Scott K

On Friday 02 June 2006 10:48, titanium rook wrote:
Mr. Levine was kind enough to provide the Qmail
patch
source for me to adapt to Postfix.

After digging through the source for several
hours, I
narrowed down the likely places to implement it. 
My
guess is the trivial-rewrite and smtpd programs.

However, I also realized that it would take a
great
deal of time for me to pull all the pieces
together.
I don't know the insides of Postfix that well.

This research was funded by a client and I
informed
him that one of Postfix developers could do it
much
faster and at less expense.  So, it is on hold for
now.  If my client pursues this further, I will
notify
the list.

Best Regards,
Keith


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