I've always used hardfail SPF on all my domains. For some reason this upsets people which means I must be doing it right. On the domains that softfail one can usually spoof as one of their leaders from outside of their company which I think should not be permitted even if it may, but often does not get marked as spam.
I've always used hardfail SPF on all my domains. For some reason this upsets people which means I must be doing it right. On the domains that softfail one can usually spoof as one of their leaders from outside of their company which I think should not be permitted even if it may, but often does not get marked as spam.