Hello, I use a suppression list where I block domains and email accounts that don't exist to prevent the reputation of my IP addresses from going down.
smtpd_recipient_restrictions = check_recipient_access mysql:/etc/postfix/ mysql-virtual-recipient-access.cf # connection to mysql hosts = 172.x.x.x user = myuser password = mypass dbname = blacklist query = SELECT access FROM virtual_sender_access WHERE source='%s' The table currently has 4 million rows, so I am looking for a faster database engine than MySql. I read this postshttp://www.postfix.org/DATABASE_README.html and http://www.postfix.org/access.5.html but I didn't find any information. Does postfix have support for mongo database? Or what method do you recommend to host a large number of unknown users and invalid domains? Regards,
