Last time on Real World Computing, I talked about migrating mail from IBM Notes and Verse to Microsoft Office 365 . Now it's time for Part 2. Mail Routing We did routing in two parts. Initially we had MX records for both IBM and Microsoft with Microsoft having the higher number (which means lower priority). After the cutover date we switched the priorities so that Microsoft Office 365 had the higher priority. One of the cool things about Microsoft’s setup is that they give you two domains, one is your own and the other is an @mycompany.onmicrosoft.com one. When we first saw this we thought it was a “bit wanky” but as it turned out, it was very useful indeed.we quickly discovered that we couldn't send mail to our internal colleagues on outlook from notes and that all of the agents in our Domino applications were only delivering internally. Changing these to point to the onmicrosoft addresses fixed that problem. As far internal mail, we just added a mail rule to f...