O365 Send Email blocked

O365 Send Email blocked

If a mass bulk emails are sent from any specific 0365 mailbox, it will be auto blocked considering the safety and security of the network.

If any user is not able to send any email, please verify the mailbox if its blocked by using the below command

[PS] Get-BlockedSenderAddress -senderaddress mailbox@domain.com

it should list if the mailbox is blocked and if yes, execute the below email to unblocked the mailbox

[PS] Remove-BlockedSenderAddress -SenderAddress mailbox@domain.com

Thanks,
WintelAdmin