Hi, I'm using OSX 10.9.4 and Mac Mail 7.3 and previously had an exchange account but upgraded to Office 365 through my workplace. Now I'm able to send and receive but the emails are not saved in my sent folder. The only settings that haven't been updated are under the 'Advanced' settings which are: Internal Server Path, Internal Port, External Server Path, External Port.
Hope you are able to see this image above. I am trying to read the articles on the subject but so far have not run across any on this topic. Thanks so much for all your help.