Has anyone else had this problem?
I have two email accounts for my business and neither of them are working. Everything looks normal on the dashboard but when I try to send a test message I get this return mail.
A communication failure occurred during the delivery of this message. Please try to resend the message later. If the problem continues, contact your email admin.
BN3NAM01FT040.mail.protection.outlook.com gave this error:Requested action not taken: mailbox unavailable (S2017062302)."
And on the other account
CY1NAM02FT039.mail.protection.outlook.com gave this error:Requested action not taken: mailbox unavailable (S2017062302).
Any help on this problem would be greatly appreciated