As well as migrating existing posts I’m keen to forward posts (for a period) that will continue to arrive at our old mailing list (a googlegroup). @erlend_sh suggested back in 2013 that this could be achieved by simply subscribing a Discourse email recipient to the mailing list.
The problem is that the mail gets rejected by discourse on the basis that it’s from a list :-/
Is there a way to whitelist particular mailing lists so we can make this work?