Arnt Gulbrandsen <arnt(_at_)gulbrandsen(_dot_)priv(_dot_)no> wrote:
Please don't read 822 any more. 2821/2822 are the main current RFCs
Unless you're writing a mail user agent and wondering whether you need
to preserve the upper/lower case information in any of the fields in a
message header. RFC 2822 says nothing about preserving case, but 822
tells exactly which fields do and do not need case preservation (in
section 3.4.7).
I don't know if that's the only omission; I haven't done a thorough
search.
Of course 2822 contains new information that you don't want to miss
(like deprecations of some syntax), so I recommend reading both.
AMC