From owner-freebsd-questions@freebsd.org Fri Dec 14 14:05:58 2018 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 01B101334AE1 for ; Fri, 14 Dec 2018 14:05:58 +0000 (UTC) (envelope-from thorsten23@googlemail.com) Received: from mail-wr1-x441.google.com (mail-wr1-x441.google.com [IPv6:2a00:1450:4864:20::441]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 7EEFB7637C for ; Fri, 14 Dec 2018 14:05:47 +0000 (UTC) (envelope-from thorsten23@googlemail.com) Received: by mail-wr1-x441.google.com with SMTP id s12so5118119wrt.4 for ; Fri, 14 Dec 2018 06:05:47 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:date:to:subject:message-id:mime-version :content-disposition:in-reply-to:user-agent; bh=dZlqr8JFBdNggTVVdYss4QlPom+fQir+GgT6dd7JPII=; b=DNBD8bunn8b4REssa6J3o0elIufP8ouqinVbFwJXNHyaBl7DXc05z3ZkZOYGbfAa1G fl/ATrbRorjvwBKgEPGcLQ4TAGMMbs3pEHvgujSokdL7z1qFZVe1Lj5XipyQzHoh7F7s pVT6/U01kYCadBLjWJ4QzH61L6c6NZDH4BFW2JWEIpPQGGQy8nr5jauXzKcmjzxcd4AK wb2QDs+RHPNzJK59NQYcgf5BNscHH967QKeqVWRQFK7XwPemPsnAlVSJ9iNE1xtGyTU1 2DQUfQwbgFYJvpvZDD9DKxVw5/tqbtFx0l/B7sc0YRBSREKpxNK6AvPwMapckn0SUKcU +EHg== X-Gm-Message-State: AA+aEWbeoiOYCHPmW4lS0rQbCF47LvtnprJE7BwPQL+mZxPBR+5Yp4QP nqg72XWjZUmT4v/g4rWrARokXJIc X-Google-Smtp-Source: AFSGD/WsSxiWOLpWUlmabS7FlfW2IZTdHjDE8jIDg7Fdq8+VY1EtrUiQCFs/tbrxUft6StySHD9U5w== X-Received: by 2002:adf:891a:: with SMTP id s26mr2728042wrs.44.1544796346196; Fri, 14 Dec 2018 06:05:46 -0800 (PST) Received: from manjaro ([2a02:810d:aabf:f708:694e:f808:9774:99c4]) by smtp.gmail.com with ESMTPSA id g198sm8838985wmd.23.2018.12.14.06.05.44 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 14 Dec 2018 06:05:45 -0800 (PST) From: Thorsten X-Google-Original-From: Thorsten Date: Fri, 14 Dec 2018 15:05:41 +0100 To: freebsd-questions@freebsd.org Subject: SOLVED RE: IPv6 enabled =?utf-8?Q?sendmail?= =?utf-8?Q?_does_not_send_to_domains_with_IPv4_only_MX_which_results_in_?= =?utf-8?Q?=E2=80=9Cconfig_error=3A_mail_loops_back_to_me=E2=80=9D?= Message-ID: <20181214140540.GA26938@manjaro> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt 1.11.0 (2018-11-25) (UNIX) (Linux 4.19.6-1-MANJARO (unknown)) X-Rspamd-Queue-Id: 7EEFB7637C X-Spamd-Bar: -- X-Spamd-Result: default: False [-2.58 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2a00:1450:4000::/36]; FREEMAIL_FROM(0.00)[googlemail.com]; TO_DN_NONE(0.00)[]; RCVD_COUNT_THREE(0.00)[3]; DKIM_TRACE(0.00)[googlemail.com:+]; DMARC_POLICY_ALLOW(-0.50)[googlemail.com,quarantine]; MX_GOOD(-0.01)[alt3.gmail-smtp-in.l.google.com,alt4.gmail-smtp-in.l.google.com,gmail-smtp-in.l.google.com,alt2.gmail-smtp-in.l.google.com,alt1.gmail-smtp-in.l.google.com]; NEURAL_HAM_SHORT(-0.89)[-0.891,0]; FROM_EQ_ENVFROM(0.00)[]; RCVD_TLS_LAST(0.00)[]; IP_SCORE(-0.21)[ip: (1.90), ipnet: 2a00:1450::/32(-1.53), asn: 15169(-1.32), country: US(-0.09)]; FREEMAIL_ENVFROM(0.00)[googlemail.com]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US]; DWL_DNSWL_NONE(0.00)[googlemail.com.dwl.dnswl.org : 127.0.5.0]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.98)[-0.978,0]; R_DKIM_ALLOW(-0.20)[googlemail.com:s=20161025]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-questions@freebsd.org]; RCPT_COUNT_ONE(0.00)[1]; MIME_TRACE(0.00)[0:+]; RCVD_IN_DNSWL_NONE(0.00)[1.4.4.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.4.6.8.4.0.5.4.1.0.0.a.2.list.dnswl.org : 127.0.5.0]; MID_RHS_NOT_FQDN(0.50)[] X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 14 Dec 2018 14:05:58 -0000 It wasn't a sendmail problem: My hostname was with with domain "hostname.my.domain" not just "hostname" so the resolver in search for the non-existent AAAA of mx00.emig.gmx.net returned mx00.emig.gmx.net.my.domain which resolved to my local IPv6 address and sendmail tried to send the mail to itself.