[Mimedefang] md_check_against_smtp_server and backscatter

[Kayne Kruse]

Hi,

Has anyone use the md_check_against_smtp_server to check if the
recipients are valid and if not, discard the message so as to not cause
back scatter?

I am currently using this in filter_recipient:

return md_check_against_smtp_server($sender, $recip,
                "nexus.pointone.com",
                "prd07smse001.pointone.com");

Regards

Kayne