How do I setup spf for my email campgains, Im aware that theres plenty of wizards out there that can help me with this however Im still unable to grasp this fully, giving my scenareo i.e. http://old.openspf.org/wizard.html?mydomain=example.com&submit=Go%21
The complication is, Im ideally looking to send a campaign on behalf of a a number of clients, however im unsure if this is possible using my current setup as this is entirely new to me, as basically Im a complete novice on this so Id appreciate a full idiots guide if thats ok, explaining the following i.e.
Should this spf be setup on the from domain e.g. email@example.com? Or the mta domain e.g. mta.mydomain.com?
If I have a number of sub domains who facilitate the send campaigns e.g. mta1.mydomain.com , mta2.mydomain.com etc Can this work with spf and if this the best way of doing it if so which options should I choose.
Also how should my MX records be setup and are these important?
I appreciate that this arguably a very obvious queasion for administrators but as my background is a developer I really would appreciate as much advice as possible and ideally an example of an email header if possible.