Microsoft ending the support for Basic Authentication access

[novianw]

Hi,

With regards to Microsoft ending the support for Basic Authentication access to exchange online API's for office 365 customers.

As per these articles:

1. https://developer.microsoft.com/en-us/office/blogs/end-of-support-for-basic-authentication-access-to...

2. https://redmondmag.com/articles/2020/04/03/basic-authentication-exchange-online.aspx

We have applications that are connecting to SMTP Servers (via smtp.office365.com port 995) and IMAP servers (outlook.office365.com port 993)

using .NET libraries such as :

1. System.Net.Mail from Microsoft. e.g. SMTPClient

2. MailKit.Net.Imap from MIT. e.g. IMAPClient

Does it mean that our applications will no longer work?

[#2]

Yes. You will need to update them to support modern auth for SMTP/IMAP. Follow the EHLO blog to get details on this: https://techcommunity.microsoft.com/t5/exchange-team-blog/announcing-oauth-2-0-support-for-imap-and-...