Looks like there's a new spam bot out there – not sure if its script kiddies running it or a bot net but what ever it is is its really crap.
So far Fail2ban has blocked about 40 IP addresses and they're all doing exactly the same thing – any even vaguely configured email server should be rejecting the messages … .here's the reject my server sent to mail.blackriverhealthcare.org which tried to use my server to spend spam :
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