Thanks for the info. The steps you outlined above are actually the things I understood when I first saw the warning within the plugin. At that point, I set up an email address that was "on-domain." My blog is http://www.ofreport.com, so I set up a WordPress admin level user with the email address email@example.com.
I've tested this address and it can send and receive email no problem. (It uses Google Apps)
I've also verified that Subscribe2 is set to send from the new admin user in Settings. Unfortunately, when I go to the Subscribe2 plugin, Settings>Send Email Preview, I still don't get the email.
As suggested by DreamHost, I've checked the mail logs, and if I'm understanding the correctly, it appears that the email is still being sent from my personal email address, which is "off-domain".
Here's one of the logs I just now copied off the server:
Received: by papeete.dreamhost.com (Postfix)
id 2C1C818A6F9; Thu, 13 Sep 2012 10:36:45 -0700 (PDT)
Date: Thu, 13 Sep 2012 10:36:45 -0700 (PDT)
From: MAILER-DAEMON@papeete.dreamhost.com (Mail Delivery System)
Subject: Undelivered Mail Returned to Sender
Content-Type: multipart/report; report-type=delivery-status;
This is a MIME-encapsulated message.
Content-Type: text/plain; charset=us-ascii
This is the mail system at host papeete.dreamhost.com.
I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.
If you are a current customer of DreamHost, please contact our
technical support team here
If you are not a customer please use our contact form at.
If you do so, please include this email in your support ticket. You can
delete your own text from the attached returned message.
DreamHost Email Support
<firstname.lastname@example.org>: host crusty.dreamhost.com[188.8.131.52] said: 550
5.7.1 Sender domain not allowed. Please read: http://dhurl.org/20b (in
reply to end of DATA command)
Content-Description: Delivery report
Reporting-MTA: dns; papeete.dreamhost.com
X-Postfix-Sender: rfc822; email@example.com
Arrival-Date: Thu, 13 Sep 2012 10:36:45 -0700 (PDT)
Final-Recipient: rfc822; firstname.lastname@example.org
Remote-MTA: dns; crusty.dreamhost.com
Diagnostic-Code: smtp; 550 5.7.1 Sender domain not allowed. Please read:
Content-Description: Undelivered Message
Received: by papeete.dreamhost.com (Postfix, from userid 11143723)
id 20C3C18A4F8; Thu, 13 Sep 2012 10:36:45 -0700 (PDT)
Subject: [OFReport.com] Faithful Men
Date: Thu, 13 Sep 2012 17:36:45 +0000
From: Plain Text Full Preview <email@example.com>
X-Mailer: PHPMailer 5.2.1 (http://code.google.com/a/apache-extras.org/p/phpmailer/)
Reply-To: Plain Text Full Preview <firstname.lastname@example.org>
Content-Type: text/plain; charset="UTF-8"
Joshua and Kelsie have added a new post to their blog. We appreciate your
interest in our ministry overseas.
View this post online at: http://www.OFReport.com/2012/08/faithful-men/
Posted by: Joshua
The August issue of our newsletter, Overseas Field Report, is now available. In
this issue we give you the latest news about our summer project, Carpathian
Mountain Outreach 2012.
Download the PDF here » [download#43#size#nohits]
If you subscribe to Overseas Field Report by regular mail, you should be
receiving a printed copy of this issue in the next week or so. As always, we
greatly appreciate your prayers and support for our ministry.
You received this e-mail because you asked to be notified when new updates are
posted. If you wish to unsubscribe, please visit
http://OFReport.com/subscriptions and adjust your preferences accordingly.
Please let me know if there's something I'm missing. Thank you!