Cannot receive emails from any of our accounts

We use smartermail for our business, and as of Friday cannot receive emails on any of the accounts.

The following message comes back:

postmaster@sjl01wmxin03.prod.dm.local

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:

support@dcr-ga.com

sales@dcr-ga.com

Does this need to be handled through our website hosting service?

Thanks

Joe Wolf Replied

10/20/2014 at 3:43 PM

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.

-Joe

Thanks, -Joe

Bruce Barnes Replied

10/20/2014 at 6:36 PM

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:

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:

216.163.176.40, to mxin.name-services.com, and;

216.163.188.60, to mxin.name-services.com, and;

38.113.116.216, 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

11/19/2014 at 9:28 PM

You need to contact your hosting provider to check whether their mail server IP is being blacklisted or not.

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