Unable to send some emails via Microsoft365 (Office365)
Posted by Sinclair Hughes on 05 March 2021 01:31 PM
On Tuesday this week Microsoft put out an urgent security bulletin informing of a serious threat to Exchange Server. Recent changes made to their Exchange Online (Office 365) service has caused some emails not able to be sent from SPM or PHM if you are using the SMTP Relay option. The error is likely to appear as “Authentication failed because the remote party has closed the transport stream”.
Emails can be sent through Office 365 (Microsoft 365) email servers using either:
In the new 409.6 release of SPM & PHM Incisive have made some changes to allow the SMTP Relay correctly communicate with Exchange Online.
If you are using 409.4 or earlier you will need to use the Authenticated Client SMTP option. Your IT technician will need to be involved to configure the authentication settings.
Authenticated SMTP requires authentication to be enabled at the Tenant and the Mailbox level.
In SPM/PHM, configure the options for each Provider in Setup > Provider > Email (call Incisive for the Security code)
SMTP Server Settings
SMTP Server Name: smtp.office365.com
SMTP Authentication required