How to Check if an Email From Security Facebookmail.com is Legitimate or Not? » S4 Network

Many people use Facebook to chat with their friends and family. They even don't know how to operate their Facebook account and secure it from any hack or threat. A community on Facebook which is named "Facebook Community" discovers the Facebook Protect and the mail ID that is security@facebookmail.com to protect the account on Facebook. So how is it possible that this is not Legitimate? Yes, Security Facebookmail.com is Legitimate.