Mailcow is an excellent full mail system running docker that installs postfix, dovecot and many other features. Smart hosts are supported on mailcow. To set up mailbaby
1) Log into the admin interface https://MAILCOW/admin
2) At the top right go to System -> Configuration
3) In the middle of the screen select ROUTING
4) Look for Sender-dependent transports add a new transport
Enter your mailbaby info
host relay.mailbaby.net:25 (change 25 as needed)
username Your mailbaby username
password Your mailbaby password
5 ) Click save
Generally speaking you will see ID of 1. Click edit and ensure the check box for active is set and test your config. When completed the config will look as follows:
Ensure sending domains follow MailBaby SPF . Please reach out to support with any questions.
