question

srysolutions-1467 avatar image
0 Votes"
srysolutions-1467 asked SharonZhao-MSFT commented

Direct Routing SIP interface

Regarding message center notification "MC297438" it states "On January 3rd 2022, to provide the best-in-class encryption to our customers, we will begin retiring Transport Layer Security (TLS) versions 1.0 and 1.1 and begin obligating TLS1.2 usage for the Direct Routing SIP interface."

However, it later states, "You are receiving this message because our reporting indicates that your organization is still connecting using SMTP Auth client submission via smtp.office365.com with TLS1.0 or TLS1.1 to connect to Exchange Online."

Yet another message states "The notification in Message Center post MC297438 applies only to customers that have implemented Direct Routing in Teams by using a Session Border Controller (SBC) and an SIP proxy. If you haven't configured Direct Routing in Teams, and if you don't have an on-premises Session Border Controller, this Message Center post does not apply to you."

Does this change apply to SMTP Auth like one of the notifications states or is it just Direct Routing SIP interface?

office-teams-windows-itpromicrosoft-365-apps-publishing-dev
· 1
5 |1600 characters needed characters left characters exceeded

Up to 10 attachments (including images) can be used with a maximum of 3.0 MiB each and 30.0 MiB total.

@srysolutions-1467 Thanks for posting in our Q&A. For this issue, it is not related to windows 365 and it seems related to office teams. So, I will remove windows 365 tag and add office-teams tag. Thanks.

0 Votes 0 ·

1 Answer

SharonZhao-MSFT avatar image
0 Votes"
SharonZhao-MSFT answered SharonZhao-MSFT commented

@srysolutions-1467,

According to the message, it will only be applied to Direct Routing SIP interface. About SMTP Auth, it will have corresponding notification if has. So, don't worry about it.

· 1
5 |1600 characters needed characters left characters exceeded

Up to 10 attachments (including images) can be used with a maximum of 3.0 MiB each and 30.0 MiB total.

@srysolutions-1467,

Do you have any further questions on this topic now?

Please feel to let me know if you have any doubt on that.

Wish all the best!

0 Votes 0 ·