Murray S. Kucherawy wrote:
I would say the angle-bracket form is what would be expected,
but you're right, this looks like an ambiguity. I would
recommend opening an errata item for it if that hasn't already
Section 3.5.1 seems pretty clear to me:
For the VRFY command, the string is a user name or a user name and
domain (see below).....
User Name <local-part@domain>
The former is one of many legal email address forms. In this one form
allowed for this command, the angle-bracket is needed. But if the
user name is not going to be entered, it shows a 2nd input form where
you don't need to use angle brackets.
However, for outputs, it MUST be in angle bracket email form.