- Plesk for Windows
There is no information in description of the field Email Addresses about possibility to add IP addresses in Plesk > Tools & Settings >Mail Server Settings >White List
IP addresses or networks can be added in White List even though it is not specified explicitly in the description.
This is a bug #PPPM-9449 which is planned to be fixed in one of the future Plesk updates.
The bug is about description only and does not affect Plesk functionality.