Office 365 Primary SMTP Address Change After User Migration By Dataprise | May 28, 2014 | Comments Off on Office 365 Primary SMTP Address Change After User Migration While performing a hybrid Office 365 migration for a client, I found that newly migrated users were getting their primary SMTP addresses changed. This organization uses %g.%[email protected] in their email address policy to stamp users with [email protected]. Their UPN logins however, are [email protected]. After migrating, users still had all of their proxy addresses properly assigned,… Read More