How to do a defer_if_permit with a SMTP code 451?

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How to do a defer_if_permit with a SMTP code 451?
\ Kim Minh Kaplan (28 May 2007)
. \ (Wietse Venema) (28 May 2007)
. . \ Kim Minh Kaplan (28 May 2007)
. . . \ (Wietse Venema) (28 May 2007)

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Subject:	How to do a defer_if_permit with a SMTP code 451?
Group:	Postfix-users
From:	Kim Minh Kaplan
Date:	28 May 2007

Hello,

I have written Greyfixš (yet another) greylisting policy server for
Postfix. The best current practice in Postfix to defer delivery for
greylisting seems to be to return action=defer_if_permit. The problem
is that this rejects the mail with an SMTP code 450 whereas it would
be better to use an SMTP code 451˛. I tried setting defer_code=451
but it is not used in the case of defer_if_permit. Is there a way to
defer with a 451 code instead of 450 using defer_if_permit?

For the moment I use action=451 instead of action=defer_if_permit.
What are the woes I should be aware of?

Thank you,
Kim Minh.

š http://www.kim-minh.com/pub/greyfix/
˛ http://cvs.puremagic.com/viewcvs/greylisting/schema/whitelist_ip.txt?r1=1.10& ;r2=1.11
--
Kim Minh.
http://www.kim-minh.com/