The application which you are using for sending the emails must support tls.
Office 365 smtp relay port 587.
Set up exchange online as an smtp relay using windows server 2008 install internet information services iis in server manager select add roles.
The smtp relay server that wants to relay mail to the office 365 mail infrastructure will.
Select outbound connections and in the tcp port box enter 587 and select ok.
Microsoft 365 or office 365 smtp relay does not require the use of a licensed microsoft 365 or office 365 mailbox to send emails.
Office 365 smtp settings.
Not all scanners support smtp with authentication and personally i don t find it really convenient either.
You should use port 587 as a default smtp port.
Once you log in to the outlook mail app use the toolbar and navigate to settings mail pop and imap.
Office 365 smtp settings for scanner or application to send an email from your scanner or application you can t always use the first method.
Mandatory requirements for smtp relay with office 365.
To set up an smtp relay you must first create a connector in office 365 to accept smtp transactions.
This connector will receive smtp relay transactions from the application or device.
Senders are not bound by the 30 messages per minute or 10 000 recipients per day limits.
The sending app must connect to the office 365 servers on port 587.
Here s how you can set up office 365 smtp settings.
If you have applications which don t support these requirements but you would like to use the office 365 smtp and pop3 servers you can use stunnel to bridge the gap.
The sending app must authenticate with office 365.
Microsoft 365 or office 365 smtp relay has higher sending limits than smtp client submission.
The concept of splitting the traditional message submission and message relay was proposed by the rfc.
Before you attempt to create a connector be sure your account has the proper exchange online permissions.
Enter the credentials of the office 365 user who you want to use to relay smtp mail.