Getting an ongoing transmission error whenever i try to send an outbound eail - message as follows :
Your message did not reach some or all of the intended recipients.
Sent: 23/10/2021 11:17 PM
The following recipient(s) cannot be reached:
'XXXXX@hotmail.com' on 23/10/2021 11:17 PM
This message could not be sent. The client operation failed. Try sending the message again later, or contact your network administrator.
Diagnostic information for administrators:
Error is [0x80004005-0x00000b22-0x00000501].
would really appreciate advice on how I can address this asap