To switch on greylisting protection for all domains in a subscription:
1. Go to Plesk Panel > Mail section > Mail Settings.
2. Select the Switch on greylisting spam protection for all mail accounts under this domain checkbox.
3. Click OK.
To switch on greylisting protection for all domains in a subscription:
1. Go to Plesk Panel > Mail section > Mail Settings.
2. Select the Switch on greylisting spam protection for all mail accounts under this domain checkbox.
3. Click OK.