Blake Ramsdell <blake(_at_)sendmail(_dot_)com> writes:
Should the local-part of an RFC2822 addr-spec be interpreted as
case-insensitive?
I think "no", based on the citations above.
I came the same conclusion when I implemented S/MIME handling some time
ago. local-part's may be case-sensitive, and implementations cannot and
should not assume otherwise in the general case.
I do empathize with you about the particular problem you have. I've
seen agents change Blake(_dot_)Ramsdell(_at_)example(_dot_)com to
BLAKE(_dot_)RAMSDELL(_at_)EXAMPLE(_dot_)COM on more than one occasion.
I think the safest reaction is to consider those agents buggy and fix
them.
/Simon