hi All,
one of users cant be able to send email from our application she gets a message saying "The server rejected one or more recipient addresses. The server response was 550 5.7.1 unable to relay"
but this error message probably makes sense if it fails for everyone ?
we also checked the from address and and they has permissions to send or receive emails from that address.
Not sure what else went wrong. Please advice.
Go to the complete details ...