Arnt, John: Thanks for these comments. When a set of mail applications are bundled under a single umbrella, then the operator can do more - and the Transformation using an existing Alias is possible. But, if a mail user is using discrete components, then can you reasonably expect them to interact as we suggest transformation? Are we back to square 1' - having eliminated an algorithmic transformation of a non-ascii mailbox name? D On 17/01/18, 3:54 AM, "UA-EAI on behalf of John R. Levine" <ua-eai-bounces@icann.org on behalf of johnl@iecc.com> wrote: > I can put that stronger: I've either worked on or read the source of seven > programs/libraries that will send EAI mail, and I don't think any of the > seven would be able to fall back to an alternative address. That sort of fallback mostly makes sense in a webmail system where the MTA and MSA and address book are sufficiently integrated. To do it in postfix or exim you'd need to add an MTA-side address book of aliases which is rather unlike anything they do now. I use qmail which can easily tell whether addresses A and B deliver to the same place, but cannot tell you the other addresses that deliver the same as A, which is what you need here. Regards, John Levine, johnl@iecc.com, Primary Perpetrator of "The Internet for Dummies", Please consider the environment before reading this e-mail. https://urldefense.proofpoint.com/v2/url?u=https-3A__jl.ly&d=DwICAg&c=FmY1u3... _______________________________________________ UA-EAI mailing list UA-EAI@icann.org https://mm.icann.org/mailman/listinfo/ua-eai