[Koha] Office365 and Koha selfregistration verification mails

FYI The Office365 Advanced Thread Protection feature rewrites URLs and verifies them when you click on them. When you try to register in Koha with an Office365 email address, you will have a problem. This has a nasty side-effect on selfregistration mails when you enabled verification mails. What happens, is: when Office365 verifies the link, the selfregistration is completed and Office365 receives the credentials. The user actually does a second call, the token is no longer found and he receives a failure message. The Koha verification process is effectively sabotaged. Note that you could add the Koha server domain as a do-not-rewrite URL in the Office365 ATP setup somewhere.. Marcel