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Re: draft-klensin-rfc2821bis-04: VRFY and EXPN syntax

2007-07-16 11:24:25



--On Monday, July 16, 2007 9:46 AM +0200 "Peter J. Holzer" <hjp-ietf-smtp(_at_)hjp(_dot_)at> wrote:

...
|   For the VRFY command, the string is a user name or a user
|   name and domain (see below).  If a normal (i.e., 250)
|   response is returned, the response MAY include the full
|   name of the user and MUST include the mailbox of the user.
|   It MUST be in either of the following forms:


But that snippet indicates that the notion what a "user name"
is changed during the preparation of RFC 2821: "user name and
domain" just doesn't make sense when the user name already
includes the domain.

Nope. Your follow-up suggestion may be helpful, but the spec anticipated (and some implementations have historically supported)

 VRFY john
to which the response could be any of
 * One mailbox, possibly with a display name
 * One mailbox and an indication that there were others
 * A list of mailboxes in a multiline response
 * An indication that the request was ambiguous
* An indication that VRFY wasn't really supported, at least with that syntax.

One might prefer a more precisely specified command, but it is more than 20 years too late.

...

   john

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