Outbound Email not working

v4
#1

When I tried send a email as the handbook

wp eval ‘echo wp_mail("[email protected]",“Hello Human”,“Hello from EasyEngine!”);’

It will display a error message

sendmail: RCPT TO:<[email protected]> (451 4.3.0 <[email protected]>: Temporary lookup failure)

#2

Had similar issues (maybe identical? I don’t remember…) But using a 3rd party for system emails is the way to go. I’m currently using mailgun.com and haven’t looked back.

#3