Hi, I have configured MX records and seem to to be able to send and receive email fine. But I can't send email to other email within the same email domain. Eg, I can't send email from
a@domain.com to
b@domain.com. Keep getting Undelivered Mail Returned to Sender error returned email. The content as followed
This message was created automatically by mail delivery software.
A message that you sent could not be delivered to one or more of its recipients. This is a permanent error.
[Email] INVALID_ADDRESS, ERROR_CODE :550, ERROR_CODE :5.1.1 The email account that you tried to reach does not exist. Please try
5.1.1 double-checking the recipient's email address for typos or
5.1.1 unnecessary spaces. Learn more at
Received:from mail.zoho.com by mx.zohomail.com
with SMTP id 154112119911015.928991908287344; Thu, 1 Nov 2018 18:13:19 -0700 (PDT)