a...@gulbrandsen.priv.no wrote: > Suppose you receive mail from my Unicode address. When you compose your > reply, you do not know whether my SMTP server accepts an a-label form of any > domains in your reply
Not true. Please again see rfc6531 section 3.2, paragraph 2, sentence 3. > , so when you want to formulate a Unicode domain in > your reply (header or SMTP), you cannot write if/then logic to pick the best > for each recipient, you have to choose. We do know that the server will support A-labels for the domain part, so there is no need to choose. If you are sending from a Unicode address, then your server will support the A-label form for the domain part if it conforms to 653x series. If it isn't conforming to 653x then what is your argument: that your server is in a unicode domain, but it doesn't support either 653x or just plain IDNA (589x)? What does it support then? > 653x is compatible with 589x in the sense that both can be used. But > incompatible, since they are different solutions to the same problem, and > you have to use exactly one for each instance of the problem. Again, 589x can be used for the domain part and 653x can be used for the mailbox part at the same time, in the same email address. > You can use both if you e.g. use u-labels for RCPT TO and a-labels for the > MAIL FROM (unless you need Unicode for the localpart), but that is IMO > silly. That is not what I am talking about, nor have I made any such argument. If my understanding of the rfcs is wrong then back up your statements with references. Tell me how I misunderstood the part in 6531 sec.3.2 where it SAYS the mailbox part can be UTF-8 and the domain part can be A-labels or U-labels. However, if you won't seriously read and reply to my emails then I'm not interesting in continuing to have a conversation where we talk past each other. So please, just wait until the weekend if you need to. -- Kevin J. McCarthy GPG Fingerprint: 8975 A9B3 3AA3 7910 385C 5308 ADEF 7684 8031 6BDA http://www.8t8.us/configs/gpg-key-transition-statement.txt
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