User tried to send email, got bounceback:
<Tim@paragonforming.com>: host canit2.digicon.net[188.8.131.52] said: 550
5.7.1 <Tim@paragonforming.com>... Rejected: 184.108.40.206 listed at
sbl-xbl.spamhaus.org (in reply to RCPT TO command)
Went to spamhaus.org, read how to test proper HELO by emailing to firstname.lastname@example.org, got this back:
<email@example.com>: host mail.cbl.abuseat.org[220.127.116.11] said: 550 Your HELO name for IP address 18.104.22.168 was "group.shoptocook.com" (in reply to RCPT TO command)
According to their documentation this is correct! HELP!!