Mail whitelist is a list of IP addresses of mail servers, domains and mailboxes from which letters will be delivered to your mailboxes with minimal spam checking.
The whitelist is managed in the "Hosting → White list»:
To add an entry to the whitelist, do the following:
Click "
Add entry to whitelist»:

Specify the IP addresses, domains or mailboxes, mail from which should not be checked for spam (each entry in a separate line), and click "
Add to»:

To delete a specific entry, do the following:
Switch to the tab of the type you want ("IP address », «Domain names " or "Email addresses »).
Find the entry you want to delete in the list and click the cross next to it:

To delete all records of a specific type, do the following:
Switch to the tab of the type you want ("IP address », «Domain names " or "Email addresses »).
Click "
Delete everything»:

To delete all records of all types, click "Clear whitelist»: