Powermta Config File Link ((exclusive)) -
If any of these links break (e.g., IP 203.0.113.5 is no longer assigned to your server), PowerMTA will log a source-not-available error and refuse to send mail for that domain.
Use "Precedence" rules to automatically slow down sending if a provider starts returning "421" busy signals. powermta config file link
: For user-level configurations, including authentication and quotas. If any of these links break (e
https://support.sparkpost.com/ -> PowerMTA Documentation -> PowerMTA Configuration Reference PowerMTA Documentation ->