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AMBAustin's avatar
AMBAustin
Copper Contributor
Sep 09, 2022

Outlook connectivity test fails / Office365 SMTP - SAML Assertion Invalid Signature

We have developed our own SAML IDP and have configured Office365 for federation to our SAML IDP. We can login to Office365, Teams, etc all with no errors. However, when we try the Outlook connectivi...
Authentication
developer
exchange
Identity
office 365
security
AMBAustin's avatar
AMBAustin
Copper Contributor
Sep 16, 2022

If there is any developer that can look at this, then I can provide a SAML ECP endpoint response which includes the signed assertion.  I think there is some issue validating the assertion on Microsoft's end, because the assertion validates using the online SAML validator tools

 

AMBAustin 

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