Date: Sun, 26 May 2013 18:36:41 -0700 From: Michael Sierchio <kudzu@tenebras.com> To: Polytropon <freebsd@edvax.de> Cc: FreeBSD Questions <freebsd-questions@freebsd.org>, Modulok <modulok@gmail.com> Subject: Re: Case sensitive usernames and sendmail - mystic voodoo Message-ID: <CAHu1Y71WKX_Psywjwg_y1t4GCS20g6j1P5adBcORkcz9O%2Bu0GQ@mail.gmail.com> In-Reply-To: <20130527031712.a6cbecf2.freebsd@edvax.de> References: <CAN2%2BEpbZgS5rNKRs=GduqS54tVrDYFbO%2BgLAnbyFHS-sUAq2Pw@mail.gmail.com> <20130527031712.a6cbecf2.freebsd@edvax.de>
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On Sun, May 26, 2013 at 6:17 PM, Polytropon <freebsd@edvax.de> wrote: > > On Sun, 26 May 2013 18:44:41 -0600, Modulok wrote: > > I know usernames are case-sensitive, I thought emails were > > too. > > If I remember e-mail basics correctly: No. They're not. > For example, foo@example.com, FOO@example.com and Foo@example.com > and all upper/lowercase variations are the same as foo@example.com. > You remember incorrectly ;-) The local part of an address (before the @ sign) is case-sensitive (with the exception of postmaster@example.com) Everything to the right of the @ is indeed case insensitive, but everything to the left might be case sensitive, depending on local policy. This means you must preserve the case of everything to the left of the @ sign.
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