Matija
Sorry, you have misunderstood what I posted. I am not at all advocating
people use gmail. Something like 68% of the planet already uses it and
few people like you and me have the skills to host our own email. It's
not crazy for the people who use gmail or yahoo or other providers, they
use it, they're used to it, and they apparently like it enough not to
leave.
It's not easy for people to run their gmail acct through spamassassin.
Maybe some hack with forwarding and adding headers and a check for
looping might work. This isn't what I was really talking about. But it
doesn't matter.
Michael Grant