A message that you sent could not be delivered

I have been in contact with my hosting company about this but I wanted to reach out to the Cloudflare community to see if my cloudlfare settings could cause issues with mail deliverability.

I believe my Cloudflare DNS settings are correct.

I have set up AWS SES on my domain and I have an email that can send successfully sometimes. However, sometimes it is not. I would like to post the message I receive:

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

[email protected]   
host 5817.smtp.antispamcloud.com [###### numbers here]
   SMTP error from remote mail server after end of data:
   550 High probability of spam
Reporting-MTA: dns; name.of.my.server

Action: failed
Final-Recipient: rfc822;[email protected]
Status: 5.0.0
Remote-MTA: dns; 5817.smtp.antispamcloud.com
Diagnostic-Code: smtp; 550 High probability of spam

I have my domain on a regular hosting company but I am also using Amazon’s SES. Could my SES settings be wrong somehow? Then why are some emails sent successfully? Could it be the recipient?

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