On Fri, 24 Jul 2009, Junyi-HUANG wrote:
I have a requirement that base on the X-PropertyID header info to route the messages to a set of smtp servers in Round Robin mode . For example , if the conf file is like : PID SMTP servers pid_a ----> smtp1:10025, smtp2:10026, smtp3:10027 pid_b -----> smtp4:10025, smtp5:10026, smtp6:10027 the first message with pid_a header should be routed to smtp1:10025, and the second one with pid_a header should be routed to smtp2:10026 .., in a Round Robin mode to repeat those rule.
That seems to be a very artificial "requirement". What problem are you actually trying to solve?
My feeling is that you should let DNS do your RR load balancing, and recipient rewriting control your pid_a/pid_b destination group divisions.
