XG not sending emails using Office 365

Question

Have XG running SFOS 16.01.3 currently. I have setup notifications, so i receive the backup every week and notifications. However they seem to fail sending from the XG to my Office 365 email account. 
 My settings are 
 Send notifications via external server

Mail Server IPv4 Address/FQDN - Port

: mydomain.mail.protection.outlook.com Port: 587 
 authentication required - ticked 
 username: user@domain 
 password : pass 
 Connection security: STARTTLS 
 Certificate: Appliance certificate 
 
 Can anyone elaborate what is the right settings to get the notifications sent across from XG to Office 365

WPTaljaard · Answer

I'm using a SMTP relay to send emails on port 25 (option3) 
 https://support.office.com/en-us/article/How-to-set-up-a-multifunction-device-or-application-to-send-email-using-Office-365-69f58e99-c550-4274-ad18-c805d654b4c4?ui=en-US&rs=en-US&ad=US

NashBrydges · Answer

Office 365 uses port 587 for SMTP. 
 I had the same difficulty and gave up trying to get Office 365 to send the email. I instead easily setup a Gmail account and can send email from it so there is clearly something with the Office 365 config that I'm not seeing. I have the same setup on Sophos UTM9 and it is sending emails via Office 365.

sachingurung · Answer

Hi, 
 Welcome to the Sophos Community. 
 Mail notification is not working with the Sophos XG and it is a known issue reported under NC-6281 & NC-9106. As of now, the XG only supports AUTH plain for authentication. 
 Thank you