550 Sender domain not found in DNS

EXPLANATION

This error indicates you are sending email from an IP address or domain name that is not yet delegated or allocated by the Internet Assigned Number Authority (IANA), commonly referred to as a Bogon IP. Traffic originating from Bogon IP addresses is generally assumed to be illegitimate or “spoofed”.

SOLUTION

If you believe that this message is in error or does not apply to your mail traffic or if you need additional information please contact us.

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