For future users: if you run into the error 'Client does not have permissions to send as this sender', simply go to the Jenkins 'configure' page and set the system admin e-mail address to be the e-mail address that you use to authenticate to Office 365.
-- You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/4a4bdff8-f62b-4066-81f8-24ebffc70d60%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.