Disable arbitrary Teams messaging


Hey everyone, I need more insight on this please, there is a feature within Microsoft Teams that allows a user to exchange chat messages with any other external party just by entering their email address in the recipient of the chat provided that this feature is enabled on both parties. This feature is enabled by default. Please assess to what extent we have this feature enabled in the Tenant and make a change request to disabled it, if enabled.


@Eric Marsi  



@Christopher Hoard 

@Allen Xu_MSFT 


@Steven Collier 


@paul keijzers 

@Bryan Nyce 

@adam deltinger  

@Chris Webb 


@Graham Walsh 


Zhengqi Lou-MSFT 

Vasil Michev 

Nate Loback 

Yuki Sun-MSFT 

@Juan Carlos González Martín 

@Satyendra Sharma 

1 Reply
I think what you're looking for is under Teams Admin Center > Users > External Access