I have just moved our email operations to a new server. Before moving I checked all public RBLs for the new IP and it wasn't listed, however it is listed in some "private" blacklists for some major providers and they aren't very fast about removing it.
In the meantime, my old server is still available. I thought if I could relay OUTBOUND only connections through it I would solve the problem until my IP is removed from those private lists. Is there an easy way to do this? I'm thinking of adding relayhost to master.cf for submission and of course adding the new server to mynetworks to postfix on the old server? Would that work or am I barking up the wrong tree? I'd test but my customers are grumpy enough right now as it is.
