Looking for logging into the Microsoft Outlook External site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Microsoft Outlook External site. After that you can login as usual with your login credentials.
https://support.office.com/en-us/article/use-outlook-anywhere-to-connect-to-your-exchange-server-without-vpn-ae01c0d6-8587-4055-9bc9-bbd5ca15e817
https://support.microsoft.com/en-us/help/2897680/how-to-set-up-exchange-on-the-web-to-access-exchange-server
https://docs.microsoft.com/de-de/exchange/clients/outlook-on-the-web/outlook-on-the-web
https://docs.microsoft.com/en-us/aspnet/core/security/authentication/social/microsoft-logins
https://social.technet.microsoft.com/Forums/office/en-US/ceb61b2e-ebb6-448b-8e77-c5d709c275d7/outlook-anywhere-internal-external-authentication?forum=exchangesvrgeneral
https://docs.microsoft.com/en-us/aspnet/web-api/overview/security/external-authentication-services
https://docs.microsoft.com/en-us/office/dev/add-ins/develop/auth-external-add-ins
https://owa.msoutlookonline.net/
https://help.uis.cam.ac.uk/service/accounts-passwords/microsoft-accounts/ees-login
https://core.co.uk/blog/restricting-access-office-365/
https://outlook.live.com/
https://stackoverflow.com/questions/43397043/outlook-as-an-external-authentication-mvc-oauth
https://www.stephenwagner.com/2017/11/05/mapi-over-http-outlook-password-prompt-external-users/