We are in the process of setting up a new CF 11 server. We are getting this error "error javax.mail.AuthenticationFailedException: 451 4.7.0" in the logs when we use cfmail that has been working for years on a CF9 server. Also the mail is in the Undelivered folder. We can drag to Spool, but it just comes back.
We do use MS Exchange 2013 and we have added our CF11 servers IP in the Frontend connector that we use to relay mail to allow email from our CF server.
Did something change with how ColdFusion processes email from CF9 to CF11?
Our current cfmail parameters.
<cfmail to="#theSendTo#"
cc="#theSendCC#"
server="mail.xenegrade.net"
from="#theFrom#"
username="<ourDomain\ourUsername>"
password="<ourPassword>"
subject="#theSubject#"
replyto="#theFrom#">