When I add a new domain under Plesk I receive this error message "Unable to send notification: mail() failed: SMTP server response: 550 Requested action not taken: mailbox unavailable or not local". Now I've Googled the problem and found only one site that talks about it. I do however receive daily notifications from the Plesk Task scheduler to the same email address. I tried searching these forums but but got nowhere. This error has just started in the last month or so. Anyone got any ideas?
Many thanks.
Many thanks.