Office 365 Smtp Relay Iis

You can skip this step if your office 365 smtp relay is non tls.

Office 365 smtp relay iis.

Check the event log. Senders are not bound by the 30 messages per minute or 10 000 recipients per day limits. Also the domain name should not match your email domain since you want to email to send via the smart host. Restart the iis service and the smtp service.

Iis smtp relay lan interface. Enter the credentials of the office 365 user who you want to use to relay smtp mail. To set up an smtp relay you must first create a connector in office 365 to accept smtp transactions. As you are configuring the smtp server in iis6 go to event viewer and filter the system log on source smtpsvc.

Microsoft 365 or office 365 smtp relay has higher sending limits than smtp client submission. Are you trying to set up office 365 to relay email messages from line of business applications or network devices. There are a few ways of doing this including simply setting up a single account in office 365 for continue reading setup an smtp open relay between an onsite windows server and. Mail relay to office 365 from iis smtp relay verify you are not using integrated windows authentication and you are using basic authentication for outbound security.

Part 2 configuring iis server as mail relay for office 365 environment. Microsoft 365 or office 365 smtp relay does not require the use of a licensed microsoft 365 or office 365 mailbox to send emails. Check for a certificate. If you ll be sending e mail via tls office 365 you need to import an ssl certificate in the server s local machine personal certificate store before you configure the iis smtp server.

This connector will receive smtp relay transactions from the application or device. After migrating a client to office 365 i needed a way of sending email from various applications and devices. Before you attempt to create a connector be sure your account has the proper exchange online permissions. I wanted an open relay for email though an onsite windows server to office 365.

In the following section we will review all of the required settings for configuring the iis smtp server as a smtp relay 1.