Re: [Dovecot] Problem with LDA. When vacation auto-reply sent, the field from=<>.

Am 22.01.2014 13:39, schrieb Dmitry:

My problem is that when vacation auto-reply sent the field from=<> Because of this does not work "sender_dependent_relayhost_maps" in postfix

<> is correct in case of auto-responders

why? to prevent mail-loops if both sides have a responder

well, there are special headers too for this but they rely on be respected by the final destination while null sender never get bounces and replies

http://en.wikipedia.org/wiki/Bounce_message

Bounce messages in SMTP are sent with the envelope sender address <>, known as the null sender address. They are frequently sent with a From: header address of MAILER-DAEMON at the recipient site.