From owner-freebsd-questions@freebsd.org Mon Jan 21 19:05:07 2019 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 BF3A114B3FDA for ; Mon, 21 Jan 2019 19:05:07 +0000 (UTC) (envelope-from plmahan@gmail.com) Received: from mail-vs1-xe2d.google.com (mail-vs1-xe2d.google.com [IPv6:2607:f8b0:4864:20::e2d]) (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 A9EBD72685 for ; Mon, 21 Jan 2019 19:05:06 +0000 (UTC) (envelope-from plmahan@gmail.com) Received: by mail-vs1-xe2d.google.com with SMTP id x64so13220724vsa.5 for ; Mon, 21 Jan 2019 11:05:06 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=MSjjpgTH8GHhQduC9OMXZW6FtjUY3VDy25tUtwQGRmc=; b=jOvaTCiSKMLsobpmji3np1Z/wGbowwz0nqrR4f26bnOB6s2JrYZeapXwkyJtP0KPZ6 ggLsYWiR2R5Wo3oD1TH3DOiHT7o+zATgVjQILK+9WoGP/CDIs6MuGeFJ0V3+wARqaBWe eOt9lcKpJxO6a7kQToGO1rSjNIMp6zDZ3P4Kofpf53aplHCmTpH4dRp/31K5iGopm2L2 clR1lQ2TBuJ0OKvQp67sGDORICcedLyqKKwyb0AZgYtyu0HyDPRSAf3yqq2ySmOCelPj xO/c3ZtgReUMNAFoFya7fdW5Nfzdc+5SXjsPrieGgkmd8/pogg5nhzA9/ezMWKOASWDx Z7gA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=MSjjpgTH8GHhQduC9OMXZW6FtjUY3VDy25tUtwQGRmc=; b=Sgbg1sL1pPsuw8yvqQwKgYBX6nZ1jakuSIGz+lpSB7D5GOt1nCfL4wlKa1dbG9jhXk ASN204xgkEOkOjEeoMb628VnI60U+OMckYsR7I8h0oFnSK/2v5dkypBwgqTX/wgN4M0r FVkteiZEh4t90Tbm+20b4Gy936HHI2iFNHdcraJxWxPvCNIv5n089evJa3xNvtCRj/3j OqMTP9FJB8Ibj+rdoBYDDSVs2dtE8TS/rYFx2Yy3bFjisZw9k+rmjr7cQgdVESc5P9CS ahx2v6ZrXlErYMevShnvMiJbPNRCTwSzWRDpr1p2t8My6qrlsUmy6y83I3l1y5Kabcbi Ixlg== X-Gm-Message-State: AJcUukeI0OQB9htXhv1TCCztXK+8FGNbBYrPNQAqSHEl+uhwO3PXbd7n o1ZDVm+c+fddMkc4vb3OxF0Opf48xdvUJ9cRqgf+98M2 X-Google-Smtp-Source: ALg8bN6L0MJIDDgHR+q9wJRd1fn0BNIbdCnvvH07MhCpaBM3/55ETGnOYUJNkAn1Ot8/O/XYHTrLqZGEYp5rm3u5O4o= X-Received: by 2002:a67:87cf:: with SMTP id j198mr12502258vsd.104.1548097505717; Mon, 21 Jan 2019 11:05:05 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Patrick Mahan Date: Mon, 21 Jan 2019 11:04:54 -0800 Message-ID: Subject: Re: Trying to understand some email issues To: Valeri Galtsev Cc: User Questions X-Rspamd-Queue-Id: A9EBD72685 X-Spamd-Bar: ---- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=jOvaTCiS; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of plmahan@gmail.com designates 2607:f8b0:4864:20::e2d as permitted sender) smtp.mailfrom=plmahan@gmail.com X-Spamd-Result: default: False [-4.56 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.99)[-0.994,0]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; FROM_HAS_DN(0.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; FREEMAIL_FROM(0.00)[gmail.com]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-questions@freebsd.org]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; NEURAL_HAM_SHORT(-0.69)[-0.686,0]; TO_MATCH_ENVRCPT_SOME(0.00)[]; TO_DN_ALL(0.00)[]; DKIM_TRACE(0.00)[gmail.com:+]; RCPT_COUNT_TWO(0.00)[2]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; MX_GOOD(-0.01)[cached: alt3.gmail-smtp-in.l.google.com]; RCVD_TLS_LAST(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[d.2.e.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.4.6.8.4.0.b.8.f.7.0.6.2.list.dnswl.org : 127.0.5.0]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; RCVD_COUNT_TWO(0.00)[2]; IP_SCORE(-0.87)[ipnet: 2607:f8b0::/32(-2.42), asn: 15169(-1.86), country: US(-0.08)]; DWL_DNSWL_NONE(0.00)[gmail.com.dwl.dnswl.org : 127.0.5.0] Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.29 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: Mon, 21 Jan 2019 19:05:08 -0000 Valeri, It does not seem compromised. I have no unexpected processes running. I'm getting subscribe to the postfix mailing list and will seek help there. The Yahoo URL only was singularly unhelpful, only stating that I might be sending spam. Which is when I decided to seek help. Thanks, Patrick On Mon, Jan 21, 2019 at 6:33 AM Valeri Galtsev wrote: > > > On 1/21/19 12:33 AM, Patrick Mahan wrote: > > All, > > > > FreeBSD 11.2 > > > > Running postfix 3.3.2_1,1 > > > > I'm getting hammered with thousands of emails from yahoo.com - > > > > Here is an example - > > > > Jan 20 22:09:01 ns postfix/smtp[1308]: 2DA97A2E2EF: to= >, > > relay=mx-aol.mail.gm0.yahoodns.net[98.137.157.43]:25, delay=13730, > > delays=13728/0.31/1.1/0.06, dsn=4.7.0, status=deferred (host > > mx-aol.mail.gm0.yahoodns.net[98.137.157.43] said: 421 4.7.0 [TSS04] > > Messages from 23.24.207.145 temporarily deferred due to user complaints - > > 4.16.55.1; see https://help.yahoo.com/kb/postmaster/SLN3434.html (in > reply > > to MAIL FROM command)) > > > > I'm trying to determine if I am somehow relaying emails to yahoo.com, > or is > > this someone attacking me. > > > > I am pretty sure I have postfix to avoid acting like a relay for > > unauthenticated connections. But this maybe something I have messed up. > > This has been happening only since I upgraded to 11.2 (I was at 9.x). I > > also just recently switch from sendmail to postfix as well. > > > > I can provide my postfix config on request if needed. > > > > Pointers to other mail-lists are welcomed. I decided to start here > before > > jumping on the postfix mailing list. > > Do you users have shell access to your mail server? If yes, then I would > check if nothing happens from one of user accounts (stolen password, bad > guys got shell as that user). They can set process that loads addresses > from remote place and sends spam message to them all. Most often they > would do it through your postfix locally. Then postfix queue will be big > time to time. And you will see this in maillog. In less likely scenario > (of it really originating from you) when scrips sends directly itself > you may increase verbosity of firewall log. One more thing to check is > that there are no unexplained processes on the machine. > > If the machine is simultaneously a web server, that would be next > suspect. They may be some form that sends email to address provided by > web visitor. But this will be one of the possibilities which most likely > will be visible in your mail logs. > > After you investigated all on your side (or maybe even before that), do > as Odhiambo suggested: go to yahoo URL provided and read what they say > there. > > Good luck. > > Valeri > > > > > Thanks in advance, > > > > Patrick > > _______________________________________________ > > freebsd-questions@freebsd.org mailing list > > https://lists.freebsd.org/mailman/listinfo/freebsd-questions > > To unsubscribe, send any mail to " > freebsd-questions-unsubscribe@freebsd.org" > > > > -- > ++++++++++++++++++++++++++++++++++++++++ > Valeri Galtsev > Sr System Administrator > Department of Astronomy and Astrophysics > Kavli Institute for Cosmological Physics > University of Chicago > Phone: 773-702-4247 > ++++++++++++++++++++++++++++++++++++++++ > _______________________________________________ > freebsd-questions@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to " > freebsd-questions-unsubscribe@freebsd.org" >