Hi, @BigDaddy . Are you using Plesk Email Security? If yes, there is a known issue our team is already working on solving. Until the issue is fixed, please apply the workaround from the following article:
Hi, @BigDaddy . Are you using Plesk Email Security? If yes, there is a known issue our team is already working on solving. Until the issue is fixed, please apply the workaround from the following article: