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UW-Madison Office 365 and Campus Relay IP Addresses
UW-Madison Office 365
Mail sent from UW-Madison Office 365 accounts will either be routed through our email security provider, Proofpoint, or will be sent directly from Microsoft.
Campus Relay Mail
Campus relay mail is transitioning to the Proofpoint Secure Email Relay service. During the transition, relayed mail may be sent through either the legacy WiscMail infrastructure or Proofpoint.
For those systems and services that integrate with our ITE email infrastructure you should be aware that our test Office 365 and relay environments use a different set of IP addresses
UW-Madison Office 365 Test
Same as Production. See above.