The FreeBSD Corporate Networker's GuideCase insensitivityOne reviewer commented that only recipient mailservers look at the Left Hand Side (LHS) of an e-mail address, inferring that case sensitivity is fine as long as sender and recipient agree on using it. I assume that this was in reference to a closed, corporate mailserver network. Like RRQ, making usernames case sensitive simply causes trouble. Case insensitivity should have been mandated in the SMTP standard years ago, but wasn't, in my opinion, for political reasons. Unfortunately, like RRQ, there's always the one ignorant person in any discussion about mailservers that is fixated on being able to do this. I had to do as much as possible to kill this idea.
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