Frank Ellermann wrote nonsense, see also <http://permalink.gmane.org/gmane.ietf.rfc822/12049>
What Alexey found is an ordinary 2821 bug, no 2822 issue. 2822 + 2822upd have: | quoted-string = [CFWS] | DQUOTE *([FWS] qcontent) [FWS] DQUOTE | [CFWS] 2821 + 2821bis have: | Quoted-string = DQUOTE *qcontent DQUOTE The "bare SP" case is AWOL, and 2821bis can simply add it: Quoted-string = DQUOTE *(SP / qcontent) DQUOTE John's proposal <qcontentSMTP> does this, eliminating all undesired 2822upd-obs cases (roughly 2822-obs + NO-WS-CTL) Frank -- @ Alexey, if you need the missing SP *now* (in RFC 2821) maybe submit it as 2821 erratum. Or wait for 2821bis.
