Office 365 Smtp Relay Iis

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

Office 365 smtp relay iis.

Enter the credentials of the office 365 user who you want to use to relay smtp mail. As you are configuring the smtp server in iis6 go to event viewer and filter the system log on source smtpsvc. I wanted an open relay for email though an onsite windows server to office 365. You will see some valuable information about your configuration changes.

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. Select outbound connections and in the tcp port box enter 587 and select ok. Part 2 configuring iis server as mail relay for office 365 environment. You can skip this step if your office 365 smtp relay is non tls.

After migrating a client to office 365 i needed a way of sending email from various applications and devices. This connector will receive smtp relay transactions from the application or device. Before you attempt to create a connector be sure your account has the proper exchange online permissions. Check the event log.

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. Are you trying to set up office 365 to relay email messages from line of business applications or network devices. 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.

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. To set up an smtp relay you must first create a connector in office 365 to accept smtp transactions. Senders are not bound by the 30 messages per minute or 10 000 recipients per day limits. We can find the iis 6 0 manager under administrative tools internet information services 6 0.

Iis smtp relay lan interface.