Re: [exim] Wildcard - Reverse DNS ACL

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Author: Heiko Schlittermann
Date:  
To: exim-users
Subject: Re: [exim] Wildcard - Reverse DNS ACL
Brian Spraker <spraker@???> (Mo 10 Feb 2014 19:59:57 CET):
> >
> >I have a wildcard match - "*yahoo.com" in the domains whitelist and it doesn't seem to take effect.  Also just tried "yahoo.com" and *.yahoo.com".
> >
> >
> >I used "exim -bh 98.139.213.141" at the command line to do some testing.  I see where exim does the SQL lookup and does the test, but none of them match (since the full reverse DNS of 98.139.213.141 is nm23-vm1.bullet.mail.bf1.yahoo.com).
> >
> >In the exim configuration, here is the code used:
> >
> >  accept
> >    hosts = ${lookup mysql{SELECT domain FROM exim_domain_whitelist }}


    ${extract{-2}{.}{$sender_host_name}.${extract{-1}{.}{$sender_host_name}}



will give you the 2 rightmosts parts of the host name.

You can construct a SQL query using this expansion. Or if you know
MySQL, you might use the text functions of mysql to get the two right
most parts of $sender_host_name.

But, $sender_host_name might be empty if the lookup didn't succeed for
PTR AND the forward lookup didn't match the address!

    Best regards from Dresden/Germany
    Viele Grüße aus Dresden
    Heiko Schlittermann
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