have a small site based on CMS script with a small database of subscribers (~900)
3-4 months ago change my hosting and after this never send any newsletter to my subscribers.
few days ago, try to send newsletter and got ~800 emails back [Mail delivery failed: returning message to sender] with such text
This message was created automatically by mail delivery software.
A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:
unrouteable mail domain "aol.com"
------ This is a copy of the message, including all the headers. ------
Received: from [**.**.**.81] (port=35142 helo=myserver.com)
by host.myserver.com with esmtpa (Exim 4.52)
for firstname.lastname@example.org; Sun, 03 Sep 2006 16:46:03 -0400
User-Agent: myserver.com 1.8.1
Date: Sun, 3 Sep 2006 16:46:03 -0400
From: "myserver.com Name" <email@example.com>
To: firstname.lastname@example.org, 1
Subject: We are glad to inform you about updates on myserver.com
X-Mailer: myserver.com 1.8.1
X-Priority: 3 (Normal)
Content-Type: text/plain; charset=utf-8
user email, server ip and server name is changed to [email@example.com, firstname.lastname@example.org, myserver.com etc]
as i said, i send ~900, and got ~800 back.
server ip isn't blacklisted
at first, i thought, that may be durign this 3-4 months all our subscribers close their emails, or something like this [:-)]
but few days ago i got mail abuse from one of my potential subscribers (@hisdomain.co.uk), who try to subscribe to our newsletter and don't get authorization email (with url). btw, i got bounced email back [Mail delivery failed: returning message to sender - The following address(es) failed:] . i contact this guy, with this "failed" email - everything is fine with his email.
so , seems that problem is on my side.
what do u think? what can be the reason of this.