I Googled that message, and it seems to be coming from the standard Java guts that OpenBD uses for email.

There looks to be an array of causes (depending on the mail server software you're using), but they all seem to orbit around the Java object's inability to resolve the server address provided.

You probably don't want to post the address you're attempting here; but you should try to telnet to that address and port and try a HELO yourself, try just the IP, or insure the machine name is fully resolved.

Alan Holden
(at work)


On 3/23/2012 2:13 PM, Alan Cole wrote:
501 5.0.0 HELO requires domain address

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