[Exim] dnslists with addition data + condition

I'm trying to feed "additional data" to a blacklist lookup, and check the
result isn't 127.0.0.10:

dnslists = dnsbl.sorbs.net/$acl_m8 != 127.0.0.10

This doesn't seem to work as expected. The debug output is:

>>> DNS lookup for 196.168.2.3 != 127.0.0.10.dnsbl.sorbs.net failed

So it looks like the "/" syntax for additional data can't be combined
with the = or != syntax for checking the return value.

This is no major problem; just wondering if anyone can confirm this ?

Thanks!

Chris

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Chris Edwards, Glasgow University Computing Service