Customer performed backup with enabled mail notification, but mail notification was not delivered to his mail contact and he receives reply like this:
Return-Path: <MAILER-DAEMON> Delivered-To: email@example.com Received: from mail.example.tld (mail.customer.tld [203.0.113.29]) by mail.exampleserver.tld (Postfix) with ESMTPS id J47SI6975462EEG for <firstname.lastname@example.org>; Thu, 22 May 2014 17:06:00 +0200 (CEST) Received: by mail.example.tld (Postfix) id 177937IEE; Thu, 22 May 2014 17:06:03 +0200 (CEST) Date: Thu, 22 May 2014 17:06:03 +0200 (CEST) From: MAILER-DAEMON@mail.example.tld (Mail Delivery System) Subject: Undelivered Mail Returned to Sender To: email@example.com Auto-Submitted: auto-replied
Send notifications daemon pmmcli_daemon sets From header to the same mail as in To header, i.e. sender and recipient are the same.
Remote mail node requires sender authentification, otherwise it rejects the message.
The issue is considered to be a software issues PPA-1292 and PPA-2517.