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Archive for August, 2014

550 Access denied – Invalid HELO name – SmarterMail

Saturday, August 2nd, 2014

When you send an email through SmarterMail, you receive following error inĀ bounc back email.

Remote host said: 550 Access denied – Invalid HELO name (See RFC2821


  • Login as admin
  • Settings/General Settings/Server Info
  • Set the hostname to ‘mailserver.mydomain.xxx’
  • Point an A record of ‘server1’ to the ip of your server
  • Create a Reverse DNS PTR recordĀ for the server ip to resolve back to mailserver.mydomain.xxx