Is there anyway to get the zmailer smtp server to test for forged sender addresses at the MAIL FROM:<> phase? Essentially, I want to perform a DNS MX record query to verify that the source IP is a valid mail exchanger for the sender's domain. Thanks. - To unsubscribe from this list: send the line "unsubscribe zmailer" in the body of a message to majordomo@nic.funet.fi