efa-project.org

Hello,

which list do I need to edit if I want more rbl servers?

Is that this list?

/etc/postfix/main.cf

smtpd_client_restrictions = permit_sasl_authenticated, reject_rbl_client zen.spamhaus.org

I can add more rbl servers like barracuda?

Yep

you can find all information on this topic

viewtopic.php?f=15&t=1958