Well, I think the latter is pretty much true, whether or not that RFC has been superseded. :>
Interesting. I'm not sure where they're getting their information, though. Don't know.
In any case, 'pure' standards and 'de facto' standards are funny things, and often don't agree. For instance, I seem to recall that technically according to standard you can have spaces in email addresses, but I can't guess at how many email clients would choke on such an address.
Double-L Will is sort of a resident expert on all things DNS related... Maybe he'll drop by with something to add? :>
- Jeff @ DreamHost
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