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Old 12-04-2006, 10:19 AM   #1
msound
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Email HELO Question


What does the receiving mail server do with the HELO message? Does it perform a dns lookup of the domain name or ip address given? Or does it do something else? Thanks!
 
Old 12-04-2006, 10:39 AM   #2
msound
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Nevermind, I did a few more searches and found the answer here: http://www.postfix.org/uce.html

" reject_unknown_hostname
Reject the request when the hostname in the client HELO (EHLO) command has no DNS A or MX record. The unknown_hostname_reject_code specifies the response code to rejected requests (default: 450)."
 
  


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