The service known as ns-mx.uiowa.edu will be updated during this time to only accept email from University of Iowa campus systems for delivery to University of Iowa Office 365 email tenant domains, e.g., uiowa.edu, iowa.uiowa.edu, list.uiowa.edu, healthcare.uiowa.edu, etc.

University of Iowa campus systems that need to send email to non-University of Iowa domains will need to use authenticated SMTP.

For more details and instructions, see https://its.uiowa.edu/support/article/108576