Hadn't seen this mentioned here, and thought it might be of general
interest.
RFCs 2821 and 2822 were published today, obsoleting the venerable RFCs
821 and 822, covering SMTP and the Internet Message Format,
respectively.
They're available from the usual places, including:
http://www.rfc-editor.org/rfc/rfc2821.txt
http://www.rfc-editor.org/rfc/rfc2822.txt
ftp://ftp.rfc-editor.org/in-notes/rfc2821.txt
ftp://ftp.rfc-editor.org/in-notes/rfc2822.txt
No big changes; from what I've read so far (I've read half of 2821),
they just do things like remove cruft (SEND, SOML, and friends),
deprecate things that haven't been used in the real world for years
(source-routing of email addresses), and clarify minor ambiguities.
-----ScottG.