If I understand correctly, just like this mailing list ua-eai@icann.org, it must be able to hold every kind of valid email address and successfully deliver email to all subscribers. That's our expectation. This functionality we have in xgenplus and we have been successfully running it since many years.
I don't understand how that could work. Let's say a list has four subscribers E1, E2, A1, A2, where E1 and E2 are EAI addresses and A1 and A2 are ASCII addresses on ASCII-only systems. Subscriber E1 sends a message to the list. Sending it to E1 and E2 works, but sending to A1 and A2 will fail since they don't accept EAI mail. What does your system do? Regards, John Levine, johnl@taugh.com, Primary Perpetrator of "The Internet for Dummies", Please consider the environment before reading this e-mail. https://jl.ly