OK - I think I'm making some progress on this. I created a DNS server that you can pass a $sender_host_name to and get a code indicating if it's a one level or 2 level domain.
I still have more work to do to make it practical. But - try this out and tell me if I'm on the right track. from your command line run: dig <host>.rb.junkemailfilter.com Example: dig ftp.perkel.com.rb.junkemailfilter.com It will return a 0.0.0.1 for single level domains and a 0.0.0.2 for two level domains. -- ## List details at http://www.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://www.exim.org/eximwiki/
