Blacklist Spammers in cPanel Blacklist Spammers in cPanel via Spam Assassin Log in to CPanel® Select Apache SpamAssassin Configure Apache SpamAssassin blacklist_from *Note: you can block all email from a single domain by using *@domain.com you can also white list your main contacts by adding *@domain.com. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Like Loading...