When IPs are fully warmed up, you can lift restrictive caps, but you should never remove them completely.
postmaster postmaster@example.com host-name mailer.example.com log-level 2 max-smtp-out 5000
max-msg-rate 2/m # Very conservative for new IPs max-conn-rate 1/m sample powermta configuration file hot
# DNS settings dns_server = "8.8.8.8" dns_timeout = 10
ISPs constantly adjust their threshold algorithms. Review your PMTA accounting logs weekly to spot patterns of deferrals, and tweak your domain limits accordingly. When IPs are fully warmed up, you can
A "hot" setup implies you are sending large volumes of email continuously, often using multiple IPs, dedicated domain reputation management, and stringent rate-limiting to major ISPs like Gmail, Yahoo, and Outlook. The goal of this configuration is:
mail-from /@transactional.sender.org/ virtual-mta pmta-transactional-pool max-msg-rate 2000/h When IPs are fully warmed up
fbl-handler abuse@your-domain.com fbl-domain fbl.your-domain.com