We are about to launch our first Groups.io community with a custom domain and when testing functionality today, we discovered that all messages sent to our group aliases are going to spam in Outlook and also showing as "on behalf of" the senders. Our IT team will happily adjust our domain settings to authorize messages from Groups.io, but we don't know what we need to add or modify in the SPF and DMARC settings and can't find any instructions on this forum or elsewhere on the web.?
