Step by Step Process:
 Go to
  Go to  mail flow
  mail flow  rules
  rules  click +icon and new pop-up window will appear as shown below.
  click +icon and new pop-up window will appear as shown below.
                         
                      Screenshot of the exchange admin mail flow screen
 “Apply this rule if” and select the mail id (“no-replyemailaddress@technomaxsystems.com”) and next
  “Apply this rule if” and select the mail id (“no-replyemailaddress@technomaxsystems.com”) and next   select the “Do the following” select the drop down as “Reject the message with explanation” and provide the necessary explanation with details.
  select the “Do the following” select the drop down as “Reject the message with explanation” and provide the necessary explanation with details.
                         
                      Screenshot of the mail policy
 
                      Screenshot of the mail output