Microsoft will discontinue SMTP basic auth

[gnyiri]

For those who are using SMTP mail service with Microsoft Exchange.

https://learn.microsoft.com/en-us/exchange/clients-and-mobile-in-exchange-online/deprecation-of-basic-authentication-exchange-online

This issue should cover the required implementation.

[ellen-wright]

Sprint planning: @srconway do we know who is best to talk to about this on our side?

[srconway]

@ellen-wright We use a proxy so I don't think this is an issue for us.