Please take note of the following information:
SMTP sessions initiated with a 'from' argument within this list will not be subject to MagicSpam checks. The use of '*' wildcard characters is supported, but not generally recommended. It is important to understand that this matches how the sender identified themselves to your email server, which may differ from what you see in the From field of the message.
Step 1: Log in to your cPanel portal.
Step 2: Access the MagicSpam Plugin
Step 3: Navigate to the Sender from Back List
Step 4: Add New Entry
Step 5: Save the Entry