Path: csiph.com!usenet.pasdenom.info!aioe.org!news.stack.nl!newsfeed.xs4all.nl!newsfeed3.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.008 X-Spam-Evidence: '*H*': 0.98; '*S*': 0.00; 'receives': 0.04; 'rfc': 0.09; 'subject:position': 0.09; 'cc:addr:python-list': 0.11; 'python': 0.11; 'fixing.': 0.16; 'from:addr:rosuav': 0.16; 'from:name:chris angelico': 0.16; 'smtp,': 0.16; 'subject:Add': 0.16; 'wrote:': 0.18; 'app': 0.19; 'module': 0.19; 'trying': 0.19; "python's": 0.19; 'cc:addr:python.org': 0.22; 'headers': 0.24; 'mon,': 0.24; 'server.': 0.24; 'cc:2**0': 0.24; 'required.': 0.27; 'header:In-Reply-To:1': 0.27; 'appear': 0.29; 'correct': 0.29; '[1]': 0.29; 'message-id:@mail.gmail.com': 0.30; "i'm": 0.30; 'header,': 0.31; 'trivial': 0.31; 'figure': 0.32; 'supposed': 0.32; 'another': 0.32; 'says': 0.33; "i'd": 0.34; "can't": 0.35; 'but': 0.35; 'received:google.com': 0.35; 'add': 0.35; 'there': 0.35; 'smtp': 0.36; 'subject:?': 0.36; 'url:org': 0.36; 'being': 0.38; 'ends': 0.38; 'issue': 0.38; 'pm,': 0.38; 'does': 0.39; 'how': 0.40; 'received:': 0.65; 'edwards': 0.91; 'to:none': 0.92; 'anywhere,': 0.93 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:cc :content-type; bh=0NwX14t8BKXbZfltYGWOYSz5lPHNaTttrlrE0lZQUYQ=; b=LNsU86vLYdvT8x+wiwwDfZ+UmP1/iGpooceRVMVkr8Nprcv1fXBAuAdlGO34AO37Nx zqeI7dCIpKFBMmMBRXIXdgBxKkPqKiWc4IxAR5fU3zoHA1g2KE7klxHSk9CewatGo6Kh 9RqcQym4ntjk+nB53GXQ+b3bYTFavebspRJ91n+0AfTpQJzAcpw+AcAC4mbj8mIC1f1z Kg/KaM1KdK7ZDJR0r1Si/yV1vvDeHfP4uEki1SjpDzVQAu2C4kzU1+ak1NT6zafS5Nex nRPxyWSIcIPqwjuvyQsEHByhhrqv8RGgKOU5b0edOaoF1FbiFlf/Nqbip2PQVHU0jgqh l0xQ== MIME-Version: 1.0 X-Received: by 10.221.36.73 with SMTP id sz9mr84132vcb.62.1399369674505; Tue, 06 May 2014 02:47:54 -0700 (PDT) In-Reply-To: References: Date: Tue, 6 May 2014 19:47:54 +1000 Subject: Re: Add "Received:" header to email msg in correct position? From: Chris Angelico Cc: "python-list@python.org" Content-Type: text/plain; charset=UTF-8 X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 24 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1399369682 news.xs4all.nl 2953 [2001:888:2000:d::a6]:35942 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:70950 On Tue, May 6, 2014 at 7:15 PM, alister wrote: > On Mon, 05 May 2014 19:51:15 +0000, Grant Edwards wrote: > >> I'm working on a Python app that receives an e-mail message via SMTP, >> does some trivial processing on it, and forwards it to another SMTP >> server. >> >> I'd like to do the polite thing and add a "Received:" header, but I >> can't figure out how to get Python's email module to add it in the >> correct place. It always ends up at the "bottom" of the headers below >> From: To: etc. It's supposed to go at the above all the Received: >> headers that where there when I received it. > > Is this required or just being polite? > what I mean is does the standard state the headers must be in a > particular order or can they appear anywhere, you may be spending time > trying to resolve an issue that does not need fixing. Yes, it's required. RFC 2821 [1] section 3.8.2 says "prepend". ChrisA [1] http://www.ietf.org/rfc/rfc2821.txt