Re: Poll of sorts: Javascript Form validation or PHP

tedd wrote: > At 5:10 PM +0100 12/7/08, Per Jessen wrote: >> You cannot have 8bit characters to the left of the @ in the email >> address. > > > I'm not sure that's correct. I am sure. In fact, the entire email header must not contain any 8-bit characters. I.e. it _can_, but it is a violation of the standard, and particularly in the email address it will cause problems, whereas it will most probably work in the Subject:. > I distinctly remember Paul Hoffman, the director of the Internet Mail > Consortium (http://www.imc.org/) saying that the left side of the @ > has always been open to whatever characters you want to use. I don't know him nor the IMC, but RFC2821 is fairly clear (as clear RFCs can be) on the matter. Still, I think this W3 webpage says it very clearly: http://www.w3.org/Mail/unencoded-8bits.html "W3C's mail servers are configured to reject messages with unencoded 8bit characters in the message email headers.". > The "xn--" is the prefix for PUNYCODE. Previous > algorithms (AMC, RACE, etc.) used other prefixes. > > After all is said and done, these were just ways to use 7 bit > characters (unfortunately, the default for the Internet) to > assemble/represent 8 bit characters. Absolutely. /Per Jessen, Zürich