Symptoms
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An e-mail is received with "mail loop detected"
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No forwarding is configured for the mailbox in Domains > example.com > E-Mail Addresses > [email protected] > Forwarding
Cause
Broken mailserver configuration
Resolution
Warning: Executing plesk repair mail
might revert customizations on the mailserver.
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Connect to the server via SSH
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Execute the following command:
# plesk repair mail example.com