The connection to eGate failed because the the sender’s address is unknown to the system. eGate is a closed system and allows communication between partners with known addresses only (whitelist). Some eGate gateway users have providers who add a dynamic prefix to the sender’s address to fool spam filters. (This method is called Bounce Address Tag Validation, BATV in short.)



On eGate, only is known as the sender’s address. In fact, this address is used as the senders’ address, but because a prefix (different each send action) was added to it, eGate still rejects the message.

eGate does not support BATV, please change your application.

(eGate notification: Info:Message rejected, unknown sender: