Exchange mailbox can receive mail but cannot send or open in OWA
One on-premises Exchange user can receive email normally, but Outlook fails whenever they send or reply with the error: "None of your email accounts could send to this…
Exchange troubleshooting
One Exchange mailbox can receive mail but cannot send or open in OWA
One user on an on-premises Exchange server can receive email, but Outlook fails whenever they try to send or reply with the message: "None of your email accounts…