We just brought online a new Exchange 2013 server in coexistence with Exchange 2007. We have been trying to send emails within OWA all day without any luck. All the messages keep going into Drafts. The email address being used was created on Exchange 2013 and is being sent to an email address in Exchange 2013. I have done all of the DNS changes within Exchange Admin Center as well as in the hosts file. I have also done what was suggested in this forum:
http://social.technet.microsoft.com/Forums/en-US/1813eec7-dc2b-40af-a3b0-1fd552f745e2/all-sent-emails-stuck-in-either-outbox-for-outlook-or-drafts-for-owa-on-new-exchange-2013?forum=exchangesvrclients
We have had not luck with this. Any other possibilities I could be missing?
Thank you,
Ryan