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SMTP server blocks 'HELO localhost' message for SmartEvent reports sent by mail
Symptoms
  • When using send report by mail ('Reports' tab -> Report name -> Manage -> Email Setting -> Send By Mail), the SmartEvent sends 'HELO localhost' and gets blocked by the SMTP server.

    Example: 
    [Expert@gw]# telnet MailServer 25
Trying <MailServer IP address>
Connected to MailServer.
Escape character is '^]'.
220 MailServer ESMTP ready.
HELO localhost
250 MailServer Hello user.domain.net [<IP address>]
mail from: 'someone@domain.com'
250 OK
rcpt to: 'somebody@domain.com'
550 Invalid HELO string (localhost)
Connection closed by foreign host.
Solution
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