Am 15.08.2014 um 08:22 schrieb ml ml: > why does postfix use a empty from=<> envelope when it tried to verify the > recioient?
* because it is the correct way of doing it * because an ordianry address may get blocked * because the other side knows and has to know that this is a bounce or verify call and handeled differently (never ever autorespond...) http://en.wikipedia.org/wiki/Bounce_message Bounce messages in SMTP are sent with the envelope sender address <>, known as the null sender address
