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DNS Make a Banner Literal

Last Modified: 2012-05-12
I get the following error from a DNSStuff report and am having emails being blackholed by Cincinnati Bell and Roadrunner.  

1)Should i be concerned about the info below
2) If I should what steps do i need to take to resolve the issue.

DNSStuff report:
MTP greeting:
Checks the SMTP greeting for validity

No A records found matching banner text for following servers, and banner is not an address literal.  RFC5321 requires one or the other (should not be a CNAME). If this is not set correctly, some mail platforms will reject or delay mail from you, and can cause hard to diagnose issues with deliverability.  Mailserver details: :  - 220 mx.google.com ESMTP j7si12657181pbd.41 : :  - 220 mx.google.com ESMTP o19si5314760weq.92 :
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