>Should I disable SAV for some domains to prevent blacklisting? Which domains?
Yes. All of them. SAV is widely considered to be abusive, since it is technically indistinguishable from spammer address verification. It's also rather ineffective since great amounts of spam now uses random sender addresses taken from the spam lists. That means the spam has a real return address, but not one with any relation to the actual source of the mail. R's, John
