just installed a new exchange 2010 SP2 into our new migrated domain (server 2003r2 to server 2008 r2).
right now, theres still our old 2003 exchange server online. i shutdowned it and tried to send/receive mails. i opened a testuser on the new exchange and sent out a mail.
the mails are stuck in the queue. however,with telnet it seems to work.
we have an ironmail smarthost where all the traffic gets routed through. the same error message shows up:
"12192011 15:40:42:Reply: '530 5.7.1 Client was not authenticated'
i have configured the smart host in out "outgoing" with its FQDN and IP address with no authentication,but the mails wont go through.