Office 365 Smtp Relay Port 587

The concept of splitting the traditional message submission and message relay was proposed by the rfc.

Office 365 smtp relay port 587.

The application which you are using for sending the emails must support tls. To set up an smtp relay you must first create a connector in office 365 to accept smtp transactions. Microsoft 365 or office 365 smtp relay has higher sending limits than smtp client submission. Then click on more settings outgoing server to set up your smtp settings.

The sending app must connect to the office 365 servers on port 587. Mandatory requirements for smtp relay with office 365. Not all scanners support smtp with authentication and personally i don t find it really convenient either. This connector will receive smtp relay transactions from the application or device.

In some cases your applications or devices don t support the requirements for connecting to office 365 using ssl or on the non standard smtp port of 587. Thus port 587 was assigned to message submission to make sure that the new policy and security requirements don t interfere with the traditional relay traffic over message relay port 25. The sending app must authenticate with office 365. Enter the credentials of the office 365 user who you want to use to relay smtp mail.

Before you attempt to create a connector be sure your account has the proper exchange online permissions. Senders are not bound by the 30 messages per minute or 10 000 recipients per day limits. 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.

The smtp relay server that wants to relay mail to the office 365 mail infrastructure will. You should use port 587 as a default smtp port. Set up exchange online as an smtp relay using windows server 2008 install internet information services iis in server manager select add roles. 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.

Here s how you can set up office 365 smtp settings.