SMTP Redirector
On smtp redirector (VPS):
Set up dkim, dmarc, etc
Point domain name on dreamhost here
ServerSetup.sh
https://github.com/n0pe-sled/Postfix-Server-Setup/blob/master/ServerSetup.sh
run 3, 4, 5
./new-redirector-setup.sh our_domain website_to_copy
Catagorize the domain: https://github.com/bluscreenofjeff/Red-Team-Infrastructure-Wiki#categorization-and-blacklist-checking-resources
nano /etc/opendkim/TrustedHosts
add rse server IP
nano /etc/postfix/main.cf
mynetworks = add rse server ip
non_smtpd_milters = $smtpd_milters #(last line)
nano /etc/postfix/header_checks
/^Received: from [^ ]+ \([^ ]+ \[[IPv0-9a-f:.]+\]\)\s+(.* \(Postfix\) with .+)$/ REPLACE Received: $1
/^X-Originating-IP:/ IGNORE
/^X-Mailer:/ REPLACE X-Mailer: mail (GNU Mailutils 3.4)
/^Mime-Version:/ IGNORE
nano /etc/postfix/master.cf
Under cleanup add:
-o header_checks=regexp:/etc/postfix/header_checks
postmap /etc/postfix/header_checks
postfix reload
On backend Server:
ServerSetup.sh
run 3,4,5,8
nano /etc/postfix/main.cf
relayhost = domain of smtp redirector
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