* on the Fri, Jan 26, 2007 at 11:16:46PM +0800, Chih-Cherng Chin wrote:
>> We use exim 4.62 with mysql. I'd like to set up whitelist that is
>> automatically updated with $recipients value when a user in our domain
>> sends out an email. The $recipients is a comma delimited list of the
>> recipients available during data acl. I see that it can be done using
>> the Perl but I was hoping not to have to use Perl for performance
>> reasons. Has anyone done this without using Perl?
> I have done something similiar without using embedded Perl while setting
> up greylisting. The sender and recipients of every outbound mail are
> stored in a DBM file. With the help of exim acl, recipients' reply would
> skip the greylisting automatically. It greatly reduces the number of ham
> mail deferred by greylisting.
> The way I do it is very simple:
I have a couple of more complicated, but cleaner methods(imo):
1.) I use MySQL. I wrote a mysql stored function that takes the value of
$recipients, and processes each address in a loop.
2.) Use a recursive ACL to separate the contents of $recipients and do a db
call for each recipient, eg below:
acl_smtp_data = acl_check_data
acl_check_data:
warn set acl_m0 =
set acl_m1 =
acl = acl_process_recipients
acl_process_recipients:
warn set acl_m0 = ${if eq{$acl_m0}{}{$recipients}{}}
set acl_m1 = ${if match{$acl_m0}{\N^([^,]+)\N}{$1}{}}
set acl_m0 = ${sg{$acl_m0}{\N^[^,]+,?(.*?)$\N}{\$2}}
# acl_m1 contains a single email address in the list at this point. #
# Do stuff with it, but do not accept/deny/drop/defer at this point #
warn !condition = ${if eq{$acl_m0}{}}
acl = acl_process_recipients
accept
Disclaimer: That example above is untested. I pulled apart an old piece
of config I wrote and modified it for your purpose. Hoepfully you get
the idea though.
Mike
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