On Wed, Sep 11, 2019 at 04:43:48PM -0400, Hendrik Boom via dovecot wrote: > Isn't the user name in the original Unix mail system (and presumably > most of its descentants) case sensitive? In which case it has to > distinguish between mail sent to bob and to Bob?
Message handling systems MUST preserve case, systems delivering messages to a mailbox SHOULD ignore case. RFCs, especially earlier ones, require local-part to be case senstive but that was a poorly thought out directive and the world largely ignored it. -- Eray
