All, I'm bringing a new sending IP online and need to know if there is an easy way to warm it up w/ Postfix.
For those that don't know, warming up is a process where you start to send small amounts of mail of the new IP till it's built up a good enough reputation. In a past life I use Port25's powermta software. It has an easy config way of doing this where you can say for gmail.com divert the first X emails to use this way of sending instead of the normal way. I'm trying to see if there is something similar in postfix. So basically I need a way to take a configurable amount of mail for various domains and send them on smtp endpoint instead of the relay that is currently configured. I searched the list archives and saw the thread of gradual shift of traffic from back in February of this year. That gives me some ideas, but that seems to be for all traffic, not a subset. I'd really like a way to send X% of gmail.com traffic to one relay and the rest to another relay. Ditto for a couple of other major ESP's like Yahoo, MS, etc... Thanks in advance. Sean
