Am 23.06.2015 um 21:28 schrieb Charles Sprickman:
One thing to keep in mind is that you may need to rotate your spare IPs in now and then. Others can correct me, but my understanding is that all the major email providers are going to treat an IP that regularly sends email to them very differently than a “new” IP. You’d essentially be starting to send from an IP that has no reputation (or a reputation based on it’s neighbors).
and *because* you have *no* reputation you will get a bad result if it comes to greylisting and similar spam prevention by treat a completly new IP as suspect and hence premature rotate IP's until something bad happened is exactly what you should *not* do
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