protecting against forged headers

is there a way to stop them?

[beezee]

is it possible to protect a domain from spammers using it as a forged header when sending out their emails?

[physics]

Hi beezee. I don't think it is possible, they can forge any domain they want AFAIK.

[adamas]

Look into Sender Policy Framework (spf) [google.com]

Any chance of previewed links opening in a new window. This is the third time I've typed this reply :)!

[beezee]

thanks for the resource, adamas. i'll check it out.