[exim] dnsdb question

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Author: Marc Perkel
Date:  
To: exim-users
Subject: [exim] dnsdb question
Having a small issue.

set acl_c_rdns = ${lookup dnsdb{ptr=$sender_host_address}{$value}{}}

Works except that if the lookup fails I get DEFER. What I want is if the
lookup fails to get an empty string. What am I doing wrong?

Thanks in Advance


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