* Wietse Venema <wie...@porcupine.org>: > For STATISTICAL load balancing you can get by with multiple IP > addresses per proxy filter "host" name. However this requires new
The main difference I see here is that delivery to a content_filter will try more than one server, giving us not only (statistical) load balancing, but also some kind of redundancy. > code in Postfix to randomize the address order. You may know that > the Postfix smtpd_proxy client does not make its own SMTP connections. > Instead it uses the same Postfix library functions for making a > connection over TCP, UNIX-domain sockets, System V streams, etc. > as all other Postfix programs (except the SMTP client, which does > its own name-to-address translation). Changing this library means > changing applications that call into this library (Postfix invokes > the _connect() functions via function pointers, so a simple "#define > old(x,y,z) new(x,y,z,0)" won't do the job. > > I have a bunch of deliverables in the second and third quarters > of 2010, so I must get Postfix 2.7 out in the first quarter. This > means I have few cycles left for Postfix 2.7. I would like to spend > those on postscreen. Understood. I can live with deploying load balancers. Thanks anyways! Stefan
