Symptom:

People sending mail to your 3Essentials domain receive a bounce/reject message indicating the following code: 5.7.1 Message rejected: 3E-01

Explanation:

This indicates that our mail gateway infrastructure rejected the mail for some reason.  Please submit a support request identifying the following information, and our support team will be glad to research and provide you more details as to the exact reason the mail was rejected:

• sender email address
• recipient email address
• date and approximate time mail was sent (at a minimum, the date).