Question
How to enable 587 submission port for Postfix/qmail mail server in Plesk?
Resolution
From Plesk interface
Go to Plesk > Tools & Settings > Mail Server Settings enable the Enable SMTP service on port 587 on all IP addresses check box and apply changes:
From SSH
- Connect to the server using SSH.
Note: if direct SSH access to the server is not possible, contact server administrator for further assistance.
- Execute the following command:
# /usr/local/psa/bin/mailserver --set-message-submission true
with