We have whitelisted our email in the developer dashboard, and emails sent from the whitelisted emails did reach user's mailbox via the relay email.
However, when user replies, the reply did not go through and the user got this response instead:
"The response from the remote server was:
550 5.1.1 Relay not allowed"
Did we miss any setting on the Apple Developer Dashboard?
However, when user replies, the reply did not go through and the user got this response instead:
"The response from the remote server was:
550 5.1.1 Relay not allowed"
Did we miss any setting on the Apple Developer Dashboard?