On Wed, 2009-07-22 at 10:31 -0600, Robert Lopez wrote:
> We get a lot of spam from a marketing company that uses hundreds of ip
> addresses and hundreds of domain names but it always comes from
> "support" at which ever names they are using that day.
>
> My supervisor wants me to block all email coming from "supp...@*".
>
> I have concerns about blocking legitimate email.
>
> Which postfix list would be best used for such a block? Could it be
> sender_access?
>
Perhaps try making this file;
/etc/postfix/header_checks
#start of file
/^From:.*support\@/ REJECT Your mail was rejected - call us on
1-800 xxx xxx to unblock
#end of file
Then add this to the foot of your main.cf
header_checks = regexp:/etc/postfix/header_checks
This will block any header with from support in it, including legitimate
ones and is very aggressive.
Perhpas better to add this to your smtpd_recipient_restrictions in
main.cf and see if this stops it.
smtpd_recipient_restrictions =
....
reject_rbl_client zen.spamhaus.org
--
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C Werclick .Lot
Technical incompetent
Loyal Order Of The Teapot.
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