Unable to open the Mail Settings menu in Plesk interface: Permission Denied

Symptoms

• When clicking on Mail Settings under a domain for a specific subscription the following message appears:

  Warning: Permission Denied

  OR

  The mail tab is missing in the subscription menu at Plesk > Subscriptions > example.com.

  OR

  Email menus are not available for the customer's domain.

•  The mail service for the subscription is disabled:

  # plesk bin subscription -i example.com | grep "Mail service"
  Mail service:                 Off

• Enabling mail service fails:

  # plesk bin subscription -u example.com -mail_service true
  mailmng-outgoing failed: ERROR:outgoing:UNIQUE constraint failed: domains.name

• Unable to create a domain alias with the error message in Plesk:

  PLESK_ERROR: mailmng-outgoing failed: Error: mailmng-outgoing failed: ERROR:outgoing:UNIQUE constraint failed: domain_aliases.name"

Cause

The outgoing mail control database already contains records about the subscription with the same name.

Resolution

1. Connect to the server via SSH.

2. Remove the subscription example.com from the outgoing mail control database:

   # /usr/local/psa/admin/sbin/mailmng-outgoing --remove-subscription --main-domain-name=example.com

3. Activate the mail service for the subscription:

   # plesk bin subscription -u example.com -mail_service true
   SUCCESS: Update of domain 'example.com' completed.