>This IMGate config works great. I just have a couple of SPAM messages >coming through now. I have noticed that the ones that are coming through >have no HELO hostname. I there a SMTP restriction to block those >messages?
sure, there are 4 helo checks: reject_invalid_hostname (illegal characters by DNS definition) reject_non_fqdn_hostname (self explanatory) reject_unknown_hostname (fqdn helo hostname has no A or MX records) smtpd_helo_required = yes .... plus access maps. Len
