Cannot receive emails from any of our accounts
Problem reported by Nathan Leverett - 10/20/2014 at 2:58 PM
Not A Problem
We use smartermail for our business, and as of Friday cannot receive emails on any of the accounts.
The following message comes back:


5:50 PM (6 minutes ago)
to me
This is an automatically generated Delivery Status Notification.

Delivery to the following recipients failed.
Some of the email addresses we use are:
Does this need to be handled through our website hosting service?

3 Replies

Reply to Thread
Joe Wolf Replied
Yes, you need to contact your hosting company.  If you don't have access to the SmarterMail logs and settings there's nothing you can do to fix the problem.
Thanks, -Joe
Bruce Barnes Replied
The blocking of your e-mail appears to be caused by invalid rDNS mapping.  Here's a graphic of the test results from
the Mail Server Test Center at www.dnsstuff.com Note that this site requires a free account before you can login and run further tests.
Here's the test results for the e-mail address, support@dcr-ga.com:
Mail Server Test Center at www.DNSStuff.com
Mail Server Test Center at www.DNSStuff.com for support@dcr-ga.com
If you run your own SmarterMail server, then you will need to contact your co-location company or, if you have your servers in a facility under your control, the company who provides your internet connection, to have the FQDN (fully qualified domain name) or your mail server REVERSE mapped to the PUBLIC, STATIC, IP address which it uses to send and receive e-mail.
Those mappings will use the following information:, to mxin.name-services.com, and;, to mxin.name-services.com, and;, to mxin.name-services.com
Once this reverse DNS mapping has been properly mapped the rDNS tests will no longer fail and your mail should, once again, be accepted.  Once the rDNS has been properly configured, the red word MISMATCH, shown in the test above, will turn black and say MATCH
If you do not operate your own mail server, then you should contact your hosting company and forward this information to them.
Bruce Barnes ChicagoNetTech Inc brucecnt@comcast.net Phonr: (773) 491-9019 Phone: (224) 444-0169 E-Mail and DNS Security Specialist Network Security Specialist Customer Service Portal: https://portal.chicagonettech.com Website: https://www.ChicagoNetTech.com Security Blog: http://networkbastion.blogspot.com/ Web and E-Mail Hosting, E-Mail Security and Consulting
Jackie Sam Replied
You need to contact your hosting provider to check whether their mail server IP is being blacklisted or not.

Reply to Thread