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Max Clark wrote:
> Hi all,
>
> The content_filter declaration within postfix is the easiest method for
> sending all email through the amavisd content filter. With this
> configuration all email traverses amavisd-new and only email matching the
> local_domains are processed with the spam and virus filters.
>
> To help reduce my system load and the amount of email passing through
> amavisd-new I would like to restrict the messages destined to amavisd-new to
> ones matching my local_domains. I am assuming this could be easily
> accomplished using transport_maps, but I am unsure of the correct syntax.
>
> If my current config is: "content_filter = smtp-amavis:[127.0.0.1]:10024",
> what would the proper transport_map look like to only process email for
> foo.com?
>
> In addition if foo.com is a virtual domain that I have declared using the
> virtual_domain_maps, what impact (if any) would this transport map have?
>
> TIA,
> Max
>
> - Max Clark
> max [at] clarksys.com
> http://www.clarksys.com
Hi Max,
This one is really for the postfix list, but here is my setup:
= In main.cf =
smtpd_recipient_restrictions = permit_sasl_authenticated,
permit_mynetworks,
reject_unauth_destination,
reject_unlisted_recipient,
check_recipient_access
hash:$config_directory/filtered_domains
= In $config_directory/filtered_domains =
domain.tld FILTER smtp-amavis:[127.0.0.1]:10024
otherdomain.tld FILTER smtp-amavis:[127.0.0.1]:10024
= In master.cf =
smtp-amavis unix - - n - 10 lmtp
-o lmtp_data_done_timeout=1200
-o lmtp_send_xforward_command=yes
= Explanation =
Because mail from mynetworks is permitted, mail reinjected by
amavisd-new will not be scanned again. If the mail makes it through the
restrictions list it gets FILTERed by the check_recipient_access rule.
The icing on the cake is that each domain could have different rules in
check_recipient_access, or none at all.
I'm not using transport maps for this because I don't need to. However,
I am using transport maps for other things like mailing list addresses.
For more info, read the docs about filters on the postfix site. That is
where I got my info.
- Sam Nilsson
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