So SPF seems to be the backscatter-saviour, the only problem is setting it up is a real pain.
I've got a VPS and use GoDaddy as my domain manager.
I set up this SPF record:
v=spf1 mx include:host.be include:host.com include:host.net include:host.org include:host.info include:host2.biz include:host3.com -all
and I get this error message when trying it out on http://www.kitterman.com/spf/validate.html:
Permanent Error SPF Permanent Error: include has trivial recursion: include:host.be
So what's wrong?
Also: Is setting up an SPF record enough, or do I also need to add some functionality to the server?