Who has set up SPF records in DNS for email?
 

I know it's strange, a real techie question on GFY.

Not a Linux/BIND guru at all. Know enough to really fuck things up. In a shared hosting environment (Send mail servicing multiple domains) how would you set up the SPF records to protect people from using your domain name from anywhere on the net?

A good reference source on the subject would help. Been lookin around google, but need to find detailed descriptions on where to place the record and its syntax.

http://spf.pobox.com/

Has a wizard for creating the SPF record.

As I suspected, damn few real webmasters here!

Thanks PornGeneral. Been to that site. Where do I place it once generated given the multiple domain environment?