Forum Discussion

Brass Contributor

Jan 23, 2017

Mail relay to Office 365 from IIS SMTP Relay

Since about a month we cannot relay email from our IIS SMTP Relay to Office 365. This has worked for a long time, therefore I do not get why it is not working anymore. The account used is still activ...

office 365

Daniel Lentz

Brass Contributor

Jan 24, 2017

Hi, there have been made som changes starting 2017

https://blogs.technet.microsoft.com/exchange/2016/03/29/important-notice-for-office-365-email-customers-who-have-configured-connectors/

C_the_S

Bronze Contributor

Jan 24, 2017

Daniel Lentz wrote:
Hi, there have been made som changes starting 2017

https://blogs.technet.microsoft.com/exchange/2016/03/29/important-notice-for-office-365-email-customers-who-have-configured-connectors/

Be sure to read the scenarios very carefully as it doesn't apply to all IIS SMTP Relay setups.