Help: What to do when individual messages are not being sent and I am receiving Mailer-Daemon returns?

Mailer-Daemon phrases mean that your message could not be delivered to the recipient for a specific reason.

Such a phrase usually indicates the reason for the failure to deliver the message (eg the recipient exceeded the disk space limit on his mail, rejected your message due to SPAM filters, etc.). If you are unable to decode it yourself - please send us the entire text of the return-mail.

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