You can strip the sender's entire connection from the Headers in the email, and make it look like your SMTP server originated the mail... With sendmail redefin

You can strip the sender's entire connection from the Headers in the email, and make it look like your SMTP server originated the mail... With sendmail redefine RECEIVED_HEADER in sendmail.mc: define(`confRECEIVED_HEADER',`by $j ($v/$Z)$?r with $r$. id $i; $b')dnl I've been using this to get around the spam filters when sending emails to my clients from my residential IP. http://www.devside.net/wamp-server/removing-senders-ip-address-from-emails-received-from-header http://www.devside.net/wamp-server/removing-senders-ip-addre...