Would SMTP Reverse DNS Mismatch & SMTP Banner Check errors affecting emails being received

hanadullset

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Nov 10, 2014
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A client of mine mentioned that he hasn't been able to receive 100% of the emails from another server. He said that sometimes the person will email him, he won't get the email but the same email will be received by a staff member in another room.

I suggested to my client that if he is using Outlook to add the email address to a safe senders list, create a rule for that email address, etc., etc.

I went a step further and did some scans at MX Toolbox which returned: SMTP Reverse DNS Mismatch & SMTP Banner Check... Could these two issues be a reason that some emails make it through and others don't?