> "Yes" because you can use MySQL for a lookup table. > http://www.postfix.org/mysql_table.5.html > > "No" because I don't believe you can lookup the sender AND recipient > at once for this kind of check. For that you need a policy server.
"No" because postfix can pass only one argument to where condition? Isn't it possible to pass multiple arguments? I'm just curious, solution with policy server satisfies me.