I'm not sure if this is possible, but I have a client who is interested in sending out monthly newsletters. Is there a way to set up only her postoffice to use it's own dedicated IP so that if her messages are marked as spam it's not going to affect everyone else?
* [ update ] I added a second local static IP and set up the router to map the additional public IP to the secondary local. Under localhost > properties > enable postoffice bindings, I set the new postoffice to bind to the secondary IP I designated. I set up all the DNS in the registrar. I can send and receive but looking at the headers from this particular mailbox, it doesn't seem to bind to the IP I designated for it but rather it binds to the primary IP...