From owner-freebsd-questions@FreeBSD.ORG Mon May 27 01:36:48 2013 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id C4B78BBA for ; Mon, 27 May 2013 01:36:48 +0000 (UTC) (envelope-from kudzu@tenebras.com) Received: from mail-oa0-f54.google.com (mail-oa0-f54.google.com [209.85.219.54]) by mx1.freebsd.org (Postfix) with ESMTP id 93ED591F for ; Mon, 27 May 2013 01:36:48 +0000 (UTC) Received: by mail-oa0-f54.google.com with SMTP id o17so8196389oag.27 for ; Sun, 26 May 2013 18:36:41 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:x-gm-message-state; bh=TBhma4kjSesavjqlZoDSTIKG1ThyQ5vPoqlAl7nTfro=; b=jlf5/TWUU1VyerpS7KvKHsiAVYBlT74kzMqq9UKrzfkvboZcZFHFs2B/lQprufNrwT Diq5h85UEQXXacVpiuAf8BdikQFt9DrJcmM5vJa7JH7hS8pVd0/nXXkQpKvfzlzNvQ+B 9SoBjfOmrpUK94NeGyjtx81MtvxFtyAFYzx/wl083trCFDzthp6v1yXYdXpc4DpBksMg DT4F4xuFEBjQkXHfB9750W3Y6mVW6Wln5TSlDN6rRMxU2JF6y+ZyYYxrnaRLolpmDTdw 2jfMLehyI7JaN85DggiLJtZJlCbbOs6R2EOeIkaMTAQfkARw6khNaYYHteVoY7+a6Yb7 S3iw== MIME-Version: 1.0 X-Received: by 10.60.44.74 with SMTP id c10mr3626956oem.80.1369618601321; Sun, 26 May 2013 18:36:41 -0700 (PDT) Received: by 10.60.9.99 with HTTP; Sun, 26 May 2013 18:36:41 -0700 (PDT) In-Reply-To: <20130527031712.a6cbecf2.freebsd@edvax.de> References: <20130527031712.a6cbecf2.freebsd@edvax.de> Date: Sun, 26 May 2013 18:36:41 -0700 Message-ID: Subject: Re: Case sensitive usernames and sendmail - mystic voodoo From: Michael Sierchio To: Polytropon X-Gm-Message-State: ALoCoQldH0ncotUIO+7ATT7lrXu/AxJv9g+/CJw8/x62qrpUNWAXWLV5MFrln/I2ZPNLyITDZZnH Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.14 Cc: FreeBSD Questions , Modulok X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 27 May 2013 01:36:48 -0000 On Sun, May 26, 2013 at 6:17 PM, Polytropon 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.