Confirmation is used for two purposes in LISTSERV: security and convenience. "Send= Open,Confirm" is a convenience rule: you just want to make sure the address is valid. "Validate= All,Confirm" is a security rule: you want to make sure forged commands are not executed. Security rules always override convenience rules. Doing otherwise would mean leaving some doors wide open while claiming that the list is secure. To allow people to leave without confirmation, simply decrease the level of security of the list. Eric