If I deploy multiple scanners with Postfix, how can I manage these Postfix instances centrally? Parent topic

To control all the Postfix computers from the web management console, enable the Apply settings to all scanners option. Choose AdministratorSMTP RoutingSMTP from the menu.

Can I make an exception on the settings for some Postfix instances separately?

To make an exception for some Postfix settings, search for the key "detach_key_postfix" in imss.ini, and add the keys that you do not want to apply from the web management console. For example:
detach_key_postfix=smtpd_use_tls:smtpd_enforce_tls:queue_directory
The parameters above will not be overwritten by any settings that you configure through the web console. You can modify main.cf manually.
Note
Note
{Parameter1:{Parameter2}:…::{Parameter n}" means you can use one or more parameters by separating them using colons.
You can find the parameter names in the table tb_postfixconfig from the database, under the column fieldname.
WARNING
WARNING
Use extreme caution when modifying the configuration file.