Wietse Venema wrote: > J Sloan: > >> Adrian Overbury wrote: >> >>> Has anyone ever written a proxy server for policy services? I have a >>> policy server (grossd, one of the best greylisting engines I've ever >>> used) that, if it goes down, causes my Postfix servers to temp fail >>> everything with 'Server configuration problem'. This is a real >>> problem for me. >>> >> I don't know specifically of a proxy offering that functionality, but I >> too would find it useful. We are running policyd v 1.82 on a mysql >> server, which is used by 4 smtp gateways in 2 data centers. If ever >> there are wan issues and the policyd server is unreachable, smtp >> > > Instead of sending MySQL queries over a WAN connection, have you > considered using a local MySQL replica instead? When the WAN hiccups, > the replica keeps answering to the local MTAs. >
That is another approach, and certainly worthy of consideration. At one time we were running a local copy of policyd on each postfix server, but that has it's drawbacks as well. Each solution has its costs - a policyd proxy would be the cheapest IMHO. Joe
