Office 365 Smtp Relay Iis

Also the domain name should not match your email domain since you want to email to send via the smart host.

Office 365 smtp relay iis.

Microsoft 365 or office 365 smtp relay has higher sending limits than smtp client submission. In the following section we will review all of the required settings for configuring the iis smtp server as a smtp relay 1. Part 2 configuring iis server as mail relay for office 365 environment. Enter the credentials of the office 365 user who you want to use to relay smtp mail.

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. Microsoft 365 or office 365 smtp relay does not require the use of a licensed microsoft 365 or office 365 mailbox to send emails. We can find the iis 6 0 manager under administrative tools internet information services 6 0.

Restart the iis service and the smtp service. 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. Check the event log. 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.

Before you attempt to create a connector be sure your account has the proper exchange online permissions. Select outbound connections and in the tcp port box enter 587 and select ok. I wanted an open relay for email though an onsite windows server to office 365. Check for a certificate.

Iis smtp relay lan interface. As you are configuring the smtp server in iis6 go to event viewer and filter the system log on source smtpsvc. Senders are not bound by the 30 messages per minute or 10 000 recipients per day limits. You can skip this step if your office 365 smtp relay is non tls.

You will see some valuable information about your configuration changes.