On Saturday 04 October 2008 05:52, Wietse Venema wrote: > Victor Duchovni: > > On Fri, Oct 03, 2008 at 09:09:56PM -0700, David Koski wrote: > > > Our CommuniGate server batches mail going out to Yahoo and at times > > > accumulates enough to exceed the limit of 5 messages per SMTP > > > connection that Yahoo has and the connection is dropped. I would like > > > to now if relaying through Postfix can resolve this problem. > > > > You can disable connection caching, globally or for specific sites. Or > > you can let the connection be dropped and make a new one. Nothing wrong > > with a dropped connection from time to time... Postfix will try the next > > MX host. Postfix does not have a numerical connection re-use limit. > > Rather, the limit is a time-limit, because this exhibits (much) better > > behaviour when delivering to a mixture of fast and slow servers. > > With Postfix 2.2 and later you could do: > > /etc/postfix/main.cf: > smtp_connection_cache_destinations = !yahoo.com, static:all > > However, this is not needed. When Yahoo drops a connection, Postfix > will just try the next MX host immediately. > > Wietse
Now to figure out how to make CGP relay one domain. But that is another list. Thanks! David
