Postal still supports the Edition one (or legacy) configuration format from Postal v2 and before. If you're using this config file, you are going to receive a warning from the logs when beginning Postal. We endorse Altering your configuration to Keep to the new v2 format that is documented https://travisxhsdn.link4blogs.com/48951102/the-single-best-strategy-to-use-for-magento-2-install