From owner-freebsd-current@freebsd.org Wed Feb 26 21:08:02 2020 Return-Path: Delivered-To: freebsd-current@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id A1B7D2453F6 for ; Wed, 26 Feb 2020 21:08:02 +0000 (UTC) (envelope-from herbert@gojira.at) Received: from mailman.nyi.freebsd.org (mailman.nyi.freebsd.org [IPv6:2610:1c1:1:606c::50:13]) by mx1.freebsd.org (Postfix) with ESMTP id 48ST0d1pyfz4KNX for ; Wed, 26 Feb 2020 21:08:01 +0000 (UTC) (envelope-from herbert@gojira.at) Received: by mailman.nyi.freebsd.org (Postfix) id DB95E2453F5; Wed, 26 Feb 2020 21:08:00 +0000 (UTC) Delivered-To: current@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id D52F92453F4 for ; Wed, 26 Feb 2020 21:08:00 +0000 (UTC) (envelope-from herbert@gojira.at) Received: from mail.bsd4all.net (mail.bsd4all.net [94.130.200.20]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mail.bsd4all.net", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 48ST0Y4X0Lz4KKR for ; Wed, 26 Feb 2020 21:07:56 +0000 (UTC) (envelope-from herbert@gojira.at) Date: Wed, 26 Feb 2020 22:07:48 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=gojira.at; s=mail201809; t=1582751267; bh=KSX+YV/8DeLcG1+kP4L/gR95ounfeKTDMYqTxsx8md8=; h=Date:Message-ID:From:To:Cc:Subject:MIME-Version:Content-Type; b=OGv13YdZ+tE1YyyuccM8vY+9EiJZMEl35TLmqTGEeMzHAc14dA0woKRd+bxqWoq5a Tr2yuBn6kBcY3y3DPpvp9TGs0+215q8YQxZbPQsfknlHEu/2ACfiVYvH3b0j1xwNpi HuwW8To61bNCjcrQWTTupOOG+9O/HBTy1Aq4iNHFBq+VrENsj+SGskN0j6HktncSTG 8TWBKdSLgX/i5gesVhpsguk8Vsrkh5TyTaW5Cm0binzJUnz2KWmdhLeRnkppRZS9EX voBxs+B1SZu5eLWl0JP1i9Gkw8Y9Hls8l6266wGH+b0m5zGq1X3sqzjYwnUUPeXHJD EE+I7Nz20Fzkw== Message-ID: <8736axm50b.wl-herbert@gojira.at> From: "Herbert J. Skuhra" To: current@FreeBSD.org Cc: Michael Butler Subject: Re: lame reverse DNS? In-Reply-To: References: User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/28.0 Mule/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-Rspamd-Queue-Id: 48ST0Y4X0Lz4KKR X-Spamd-Bar: / Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gojira.at header.s=mail201809 header.b=OGv13YdZ; dmarc=none; spf=pass (mx1.freebsd.org: domain of herbert@gojira.at designates 94.130.200.20 as permitted sender) smtp.mailfrom=herbert@gojira.at X-Spamd-Result: default: False [-0.82 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.99)[-0.986,0]; R_DKIM_ALLOW(-0.20)[gojira.at:s=mail201809]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+ip4:94.130.200.20]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[gojira.at]; TO_MATCH_ENVRCPT_SOME(0.00)[]; DKIM_TRACE(0.00)[gojira.at:+]; RCPT_COUNT_TWO(0.00)[2]; MID_CONTAINS_FROM(1.00)[]; RCVD_COUNT_ZERO(0.00)[0]; FROM_EQ_ENVFROM(0.00)[]; SUBJECT_ENDS_QUESTION(1.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:24940, ipnet:94.130.0.0/16, country:DE]; IP_SCORE(-0.33)[ipnet: 94.130.0.0/16(-0.10), asn: 24940(-1.55), country: DE(-0.02)] X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 26 Feb 2020 21:08:02 -0000 On Mon, 17 Feb 2020 17:45:46 +0100, Michael Butler wrote: > > Seems there's an issue with freebsd.org's reverse DNS resulting in > refused email, e.g. > > Feb 17 08:58:54 mail postfix/smtpd[41811]: NOQUEUE: reject: RCPT from > unknown[2610:1c1:1:606c::19:2]: 550 5.7.25 Client host rejected: cannot > find your hostname, [2610:1c1:1:606c::19:2]; > from= to= > proto=ESMTP helo= > Feb 17 10:55:52 mail postfix/smtpd[82117]: NOQUEUE: reject: RCPT from > unknown[96.47.72.81]: 550 5.7.25 Client host rejected: cannot find your > hostname, [96.47.72.81]; from= > to= proto=ESMTP helo= > Feb 17 11:11:15 mail postfix/smtpd[83299]: NOQUEUE: reject: RCPT from > unknown[96.47.72.81]: 550 5.7.25 Client host rejected: cannot find your > hostname, [96.47.72.81]; from= > to= proto=ESMTP helo= > > Looking more closely .. > > /home/imb> host 2610:1c1:1:606c::19:2 > Host > 2.0.0.0.9.1.0.0.0.0.0.0.0.0.0.0.c.6.0.6.1.0.0.0.1.c.1.0.0.1.6.2.ip6.arpa > not found: 2(SERVFAIL) > /home/imb> host 96.47.72.81 > Host 81.72.47.96.in-addr.arpa not found: 2(SERVFAIL) The problem has been resolved but I still sometimes see "connect from unknown[2610:1c1:1:606c::19:2]" in the maillog (today: 6 of 131 connections). Local unbound issue? -- Herbert