A customer is migrating their mail environment, and in the interim a bit of trickery is needed.
They are currently using a Postfix+Mailscanner machine as a gateway per the http://www.postfix.org/STANDARD_CONFIGURATION_README.html#firewall Now, how would I realize a scenario where SOME users of a domain is to be directed to 172.31.254.160 and SOME to 172.31.254.150?
