I'm using exim4 configured with "smart host" on Debian Squeeze.
Also I have fetchmail, courier IMAP and apache2, php5, squirrelmail combo
for mailing (I have several two booting boxes with win and linux - it was
the easiest way to have mailing infrastructure for both systems). For long
time I have no pőropblems, but now I have got several error messages from
my "smart host":
Header (as it shown in Squirrelmail):
Return-path: <>
Envelope-to: postmaster@???
Delivery-date: Wed, 09 Jan 2013 10:30:40 +0100
Received: from Debian-exim by samu.bubu.dyndns.ws with local (Exim 4.63)
id 1Tsrzc-0001Lv-DR
for postmaster@???; Wed, 09 Jan 2013 10:30:40 +0100
Auto-Submitted: auto-replied
From: Mail Delivery System <Mailer-Daemon@???>
To: postmaster@???
Subject: Message frozen
Message-Id: <E1Tsrzc-0001Lv-DR@???>
Date: Wed, 09 Jan 2013 10:30:40 +0100
Message (as it shown in Squirrelmail):
Message 1Tsrzb-0001Ls-U7 has been frozen (delivery error message).
The sender is <>.
The following address(es) have yet to be delivered:
some.one@???: SMTP error from remote mail server after MAIL FROM:<>
SIZE=2673: host smtp.upcmail.hu [213.46.255.2]: 550 5.1.0 <> sender rejected
I think these emails are reading confirmation.
I think, that problem is "Return path" and "sender" fields are empty.
It could be solved by exim4 configuration? It could be the problem of
exim4? I'm not sure :(
Any help?