PostFix IP Authentication
Routing all outgoing mails via the outgoing smarthost (IP Authentication):
- Ensure the IP address is added as an Authorized Smarthost (without authentication)
- Ensure the Outgoing User has Enable Outgoing Connection Limits: ON
- Be sure that the correct limits are set matching your traffic volumes per Month, Week, Day, Hour and Minute
- Update your configuration
- Edit
/etc/postfix/main.cf
and ensure it contains the following line:
relayhost = SMARTHOST:587
- Edit
- Restart PostFix
For information on smarthosts, see Outbound Filtering Hostnames