Mail cant sent following error occure

#1

(550, ‘Your FROM address ( admin@example.com , admin@example.com )must match your\nauthenticated email user ( hemant@shakuntalaentp.com ).Treating this as a\nspoofed email.’)
Traceback (most recent call last):
File “/home/pankaj/frappe-bench/apps/frappe/frappe/email/queue.py”, line 370, in send_one
smtpserver.sess.sendmail(email.sender, recipient.recipient, encode(message))
File “/usr/lib/python2.7/smtplib.py”, line 751, in sendmail
raise SMTPDataError(code, resp)
SMTPDataError: (550, ‘Your FROM address ( admin@example.com , admin@example.com )must match your\nauthenticated email user ( hemant@shakuntalaentp.com ).Treating this as a\nspoofed email.’)

#2

@hemant_Dabholkar,

You are trying to send mail from admin@example.com which is invalid email please check the email id