On Tue, Feb 26, 2013 at 01:50:34AM +0100, Piotr Rotter wrote: > Can I set postfix to reject empty sender address for authenticated users.
Null-sender must be accepted. There are several occasions where a MUA may send them, for example DSN mandates its usage sometimes. RFC 6409 specifies: | Note that a null return path, that is, MAIL FROM:<>, is permitted and | MUST NOT, in itself, be cause for rejecting a message. (MUAs need to | generate null return-path messages for a variety of reasons, including | disposition notifications.) Bastian -- Peace was the way. -- Kirk, "The City on the Edge of Forever", stardate unknown