Postal however supports the version 1 (or legacy) configuration structure from Postal v2 and earlier. If you're using this config file, you'll receive a warning from the logs when starting up Postal. We advocate changing your configuration to Adhere to the new v2 structure which is documented above. Take https://mailwizzinstallation44433.ampedpages.com/an-unbiased-view-of-nginx-tuning-54286852