I am working on an exchange 2010 server and when I go to send mail it sais in telnet client was not authenticated in reply from mail command
So I have 2 server on site and exchange 2007 that I have moved all of my email boxes off of to the new exchange 2010 server. when i point the MX record to go to the new 2010 server all mail gets rejected with the above error.
what am I doing wrong
both servers are server 2008 r2
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