Paul Smith wrote:
From: Joe \(Joseph\) Bloggs <joe(_at_)joe(_dot_)com>
My reading of RFC 2822 says that this is three "tokens", 'Joe',
'\' and an unfinished comment '(Joseph) Bloggs <joe(_at_)joe(_dot_)com>'
I think it's "Joe" followed by a syntax error, how you resume
parsing after an error, e.g. arriving at "unfinished comment",
not at all, or ignoring an invalid quoted-pair, isn't specified.
the '\' before the '(' isn't a quoting '\' but a real '\'.
The real backslash is a real syntax error at this place.
Outside comments you use " characters for quoting.
Quoted pairs can also appear within quoted strings, or in
domain-literal, maybe more, not only in comments. And
quoted strings aren't allowed everywhere, e.g. not as a
domain-literal, domain-literals use square brackets.
syntactically correct formations of the line could be:
From: "Joe (Joseph) Bloggs" <joe(_at_)joe(_dot_)com>
From: (Joe \(Joseph\) Bloggs) joe(_at_)joe(_dot_)com
From: Joe (\(Joseph\)) Bloggs <joe(_at_)joe(_dot_)com>
Or From: "Joe \(Joseph\) Bloggs" <joe(_at_)example>
or From: Joe (Joseph) Bloggs <joe(_at_)example>
Using the new 2821bis style of a TLD address,
we're on the SMTP list... :-)