Jonathan Tripathy: > Hi Folks, > > To prevent spammers sending email from spoofed addressed that appear > from my domain, I currently use SPF. I'm having second thoughts about > using SPF, so is there any other way to make sure that only > authenticated users can send email from my domain?
Receivers may "verify" the message origin with SPF, DKIM, S/Mime,
or other information that you make available to those receivers.
But nothing requires that receivers do those things.
Wietse
