Re: [Exim] pull back lookup info as variable

> #routers
> ext_if_not_int:
>    driver = dnslookup
>    domains = ! +local_domains
>    transport = external_smtp
>    headers_remove = recieved
>    condition = ${lookup
> dnsdb{mx=$domain}lsearch{/usr/exim/internal_ips}fail}  <- this bit
> made up

Some problems with the above statement:
   - You are performing an MX lookup, which will (should!) return a name,
     not an IP address.  Matching it against a list of IP addresses will
     always fail.

   - A single ${lookup..} cannot query both 'dnsdb' and 'lsearch'.  You
need
     nested lookups.

   - Per syntax of the ${lookup...} function, "fail" is not valid where
you
     put it.

You probably mean something like:
   condition = ${lookup {${lookup{a=$domain}{$value}fail}} \
                        lsearch {/usr/exim/internal_ips} \
                        {true}}

But may I ask why you do this?  Doesn't the line:
    domains = ! +local_domains