> Yes, but not directly through the built-in "reverse_host_lookup" ACL
> parameter since it does the forward check automatically.
>
> Here is the equivalent ACL you could use based upon your example:
>
> defer
> !condition = ${lookup dnsdb{defer_never,ptr=$sender_host_address}{yes}}
> message = Reverse DNS lookup failed for host $sender_host_address
Unfortunately I get this.
failed to expand ACL string "${lookup
dnsdb{defer_never,ptr=$sender_host_address}{yes}}": lookup type
"dnsdb" is not available (not in the binary - check buildtime LOOKUP
configuration)
Matt
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