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Brass Contributor

Jun 19, 2020

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Interaction Teams2Teams and Teams2Skype - Issues and Question / UPN vs. Email

Hello, i have an understanding issues regarding the Teams2Teams interaction and also with Teams2Skype. Consider the following scenario. Tenant A: cloud only account / Teams only UPN ...

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RealTime_M365
Jun 30, 2020
Hi ErikVet

The is by design. Majorly because the Teams Application uses the UPN ID which indeed would also be the SIP Address for the Tenant B Users where the Tenant A Users are trying to reach to. Hence Tenant B need to fix the Email and the UPN Addresses to make this work.

With Regards,
Satish U

RealTime_M365

MVP

Jun 30, 2020

Hi ErikVet

The is by design. Majorly because the Teams Application uses the UPN ID which indeed would also be the SIP Address for the Tenant B Users where the Tenant A Users are trying to reach to. Hence Tenant B need to fix the Email and the UPN Addresses to make this work.

With Regards,

Satish U

ErikVet

Brass Contributor

Aug 19, 2020

RealTime_M365

thx for the reply.

We thought so to, but in some cases (business related) it is not possible to keep Email Address and UPN in line. It would be great if MS can somehow address this issue. Maybe with some kind of DNS magic/records ...

I guess we are not the only one out there , where this is and must be the case. I know that Microsoft recommends this but sometimes not feasible.

Many Greetings

Erik