SnapCenter server fails to send email with error: Mailbox unavailable. The server response was: 5.7.1 Relaying denied
Applies to
SnapCenter server 4.x
Issue
SnapCenter server fails to send email.
Error:
ERROR SnapManagerWeb_59404 PID=[244] TID=[340] Error sending email: System.Net.Mail.SmtpFailedRecipientsException: Unable to send to all recipients. ---> System.Net.Mail.SmtpFailedRecipientException: Mailbox unavailable. The server response was: 5.7.1 Relaying denied