Dnia 6.10.2020 o godz. 18:30:28 Rick King pisze: > > Now our customer has subscribed to Shopify, which apparently sends > messages using the customer's email address as the FROM address. Which > results in a rejection with a 553 5.7.1 Sender address rejected: not > logged in.
So I understand you are enforcing authentication (and identity of sender address to SASL username) on INCOMING mail that seems to be from your domain? That's a very bad idea, it breaks forwarding, some mailing lists and many other things. You should enforce authentication only on submission service, not on general incoming mail. -- Regards, Jaroslaw Rafa r...@rafa.eu.org -- "In a million years, when kids go to school, they're gonna know: once there was a Hushpuppy, and she lived with her daddy in the Bathtub."
