I apologize for this basic security question but would like some input from the pros. I don't have a public DNS record created for my external interface of the firewall and I think from years ago this was a good practice. I am using the NG R55 SMTP security server and have been receiving some reports that some destination mail servers are rejecting messages from our system due to failure to reverse lookup the originating address. How would I go about solving this? I guess the simplest thing to do is to create a DNS record and a pointer for the firewall interface but I'm not sure if this would increase the security risk. Thank you. --- Fred Katsumi Director, Information Technology CBC (AMERICA) Corp.
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