Message delivery to the host XX.XX.XX.XX failed while delivering to the remote domain ezref.info for the following reason: The remote SMTP service rejected AUTH negotiation.
SCENARIO:
Local SMTP server forwarding all emails to a SMART HOST.
ERROR:
Logname: system
Source: SMTPSVC
Level: Warning
EventID: 4006
RESOLUTION:
Ensure that the SMART HOST server name is set correctly.