From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6CBBEC19F2A for ; Thu, 4 Aug 2022 16:22:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235652AbiHDQWB (ORCPT ); Thu, 4 Aug 2022 12:22:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39976 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234734AbiHDQVz (ORCPT ); Thu, 4 Aug 2022 12:21:55 -0400 Received: from outgoing.mit.edu (outgoing-auth-1.mit.edu [18.9.28.11]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4054667148 for ; Thu, 4 Aug 2022 09:21:51 -0700 (PDT) Received: from cwcc.thunk.org (pool-108-49-209-117.bstnma.fios.verizon.net [108.49.209.117]) (authenticated bits=0) (User authenticated as tytso@ATHENA.MIT.EDU) by outgoing.mit.edu (8.14.7/8.12.4) with ESMTP id 274GLlDL004456 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 4 Aug 2022 12:21:48 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mit.edu; s=outgoing; t=1659630109; bh=MuyFohwLHefqqZAftNa3QVva8B2GBWEi8Hsri2lV/18=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=LGrZL9DVlanNdgmQbtxJCKzIFpG76GoLP5gWuL2KjdrAeDfY9V8I1WI47QXAHGYgk QCkM8iHMHw5+EhiblHTEhHY76Yqfw9eez04y/JJU1/Y6VncrAtNcGBe/83DzQvVLb6 P6u22oRCpwcdZgX7sClrn3d3JeK1en7509rqrNGQjNrQ8hMJf58HB35gIwoAZRoh7a t2wJPbBJRDb58GjVCXliEqIhBYiB2tnzy6T3tWi0wmplt1YJiEECjV19Jsc2oTsHDA YshErsOHkYc10mi7PdxYIbvp9+AQa00CPKw2FFXWlKjueHzxt3KlhuM5Jly9JKkFeB z38sNX8aO2wWw== Received: by cwcc.thunk.org (Postfix, from userid 15806) id B758F15C00E4; Thu, 4 Aug 2022 12:21:47 -0400 (EDT) Date: Thu, 4 Aug 2022 12:21:47 -0400 From: "Theodore Ts'o" To: Eric D Cc: git@vger.kernel.org Subject: Re: mail from mathworks.com domain is rejected Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org On Thu, Aug 04, 2022 at 11:57:40AM -0400, Eric D wrote: > I and a colleague of mine have been unable to send email to this list > from our work accounts; the mail server always responds with the > following: > > git@vger.kernel.org > 23.128.96.18 > Remote Server returned '554 5.7.1 <23.128.96.18 #5.7.1 smtp; 553 5.7.1 > Hello [23.128.96.19], for your MAIL FROM address > policy analysis reported: Your address is not > liked source for email>' > > Can this be corrected? Is there any additional information that I can provide? Mathworks.com has the following SPF settings (found by running "dig -t TXT mathworks.com"): mathworks.com. 900 IN TXT "v=spf1 ip4:144.212.130.25 ip4:144.212.244.25 include:spf-misc.mathworks.com include:spf.protection.outlook.com include:us._netblocks.mimecast.com include:_spf.salesforce.com ?exists:%{i}._spf.mathworks.com ~all" The ip address 23.128.96.19 reverse resolves to lindbergh.monkeyblade.net. At a guess, after expanding the indlude: fields for the SPF record for mathworks.com, it looks like individual IP addresses that are manually added by the mathworks.com postmaster are stored in spf-misc.mathworks.com and spf-misc1.mathworks.com. For example: % dig -t TXT spf-misc.mathworks.com ... spf-misc.mathworks.com. 900 IN TXT "v=spf1 ip4:144.212.128.24/29 ip4:142.0.160.0/20 ip4:144.212.100.42/32 ip4:208.185.229.0/24 ip4:208.185.235.0/24 ip4:12.130.57.0/24 include:spf-misc1.mathworks.com ~all" ... So it looks like you and your colleague need to ask your work's mail admins to add the IP addresses of the hosts from which you send e-mail to mathworks.com's SPF allow list. Alternatively, they may tell you to reconfigure your mailers to use one of mathworks.com's mail submission servers. Cheers, - Ted