Hi, I send myself a little email.
Return-Path: <ra...@inputplus.co.uk> X-Original-To: ralph Delivered-To: ra...@inputplus.co.uk Received: by orac.inputplus.co.uk (Postfix, from userid 1000) id 9687C279FC; Wed, 16 Nov 2016 12:29:46 +0000 (GMT) Date: Wed, 16 Nov 2016 12:29:46 +0000 To: ra...@inputplus.co.uk Message-Id: <20161116122946.9687c27...@orac.inputplus.co.uk> From: ra...@inputplus.co.uk (Ralph Corderoy) foo I use nmh's dist(1) command to distribute it, using Resent-From, Resent-To, etc., headers. (IIRC this is similar to mutt's "bounce" command.) Postfix complains of a "mail forwarding loop" by return. Return-Path: <> X-Original-To: ra...@inputplus.co.uk Delivered-To: ra...@inputplus.co.uk Received: by orac.inputplus.co.uk (Postfix) id 2DF9D27E4C; Wed, 16 Nov 2016 12:29:55 +0000 (GMT) Date: Wed, 16 Nov 2016 12:29:55 +0000 (GMT) From: mailer-dae...@inputplus.co.uk (Mail Delivery System) Subject: Undelivered Mail Returned to Sender To: ra...@inputplus.co.uk Auto-Submitted: auto-replied MIME-Version: 1.0 Content-Type: multipart/report; report-type=delivery-status; boundary="0F24A1F958.1479299395/orac.inputplus.co.uk" Content-Transfer-Encoding: 8bit Message-Id: <20161116122955.2df9d27...@orac.inputplus.co.uk> This is a MIME-encapsulated message. --0F24A1F958.1479299395/orac.inputplus.co.uk Content-Description: Notification Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit This is the mail system at host orac.inputplus.co.uk. I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below. For further assistance, please send mail to postmaster. If you do so, please include this problem report. You can delete your own text from the attached returned message. The mail system <ra...@inputplus.co.uk> (expanded from <ralph>): mail forwarding loop for ra...@inputplus.co.uk --0F24A1F958.1479299395/orac.inputplus.co.uk Content-Description: Delivery report Content-Type: message/delivery-status Content-Transfer-Encoding: 8bit Reporting-MTA: dns; orac.inputplus.co.uk X-Postfix-Queue-ID: 0F24A1F958 X-Postfix-Sender: rfc822; ra...@inputplus.co.uk Arrival-Date: Wed, 16 Nov 2016 12:29:55 +0000 (GMT) Final-Recipient: rfc822; ra...@inputplus.co.uk Original-Recipient: rfc822;ralph Action: failed Status: 5.4.6 Diagnostic-Code: X-Postfix; mail forwarding loop for ra...@inputplus.co.uk --0F24A1F958.1479299395/orac.inputplus.co.uk Content-Description: Undelivered Message Content-Type: message/rfc822 Content-Transfer-Encoding: 8bit Return-Path: <ra...@inputplus.co.uk> Received: from orac.inputplus.co.uk (orac.inputplus.co.uk [IPv6:::1]) by orac.inputplus.co.uk (Postfix) with ESMTP id 0F24A1F958 for <ralph>; Wed, 16 Nov 2016 12:29:55 +0000 (GMT) X-Original-To: ralph Delivered-To: ra...@inputplus.co.uk Received: by orac.inputplus.co.uk (Postfix, from userid 1000) id 9687C279FC; Wed, 16 Nov 2016 12:29:46 +0000 (GMT) Date: Wed, 16 Nov 2016 12:29:46 +0000 To: ra...@inputplus.co.uk User-Agent: mail v14.8.14 Message-Id: <20161116122946.9687c27...@orac.inputplus.co.uk> From: ra...@inputplus.co.uk (Ralph Corderoy) Resent-From: Ralph Corderoy <ra...@inputplus.co.uk> Resent-To: ra...@inputplus.co.uk Resent-Date: Wed, 16 Nov 2016 12:29:55 +0000 Resent-Message-Id: <20161116122955.0f24a1f...@orac.inputplus.co.uk> foo --0F24A1F958.1479299395/orac.inputplus.co.uk-- AIUI this is because the original email's Delivered-To header is in the resent email with the same email address as the new email's destination. Does an RFC cover Delivered-To? If not, what's the closest to a specification? Resending the email to myself at the same email address is legitimate and used to work in years past. What does Postfix think an MUA should do in this circumstance? Remove the Delivered-To header whenever resending? Any other advice Postfix can offer this MUA? -- Cheers, Ralph. https://plus.google.com/+RalphCorderoy