Date: Mon, 21 Jan 2019 10:40:21 -0800 From: Patrick Mahan <plmahan@gmail.com> To: "Kurt Buff - GSEC, GCIH" <kurt.buff@gmail.com> Cc: "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org> Subject: Re: Trying to understand some email issues Message-ID: <CAFDHx1J9Mx6gV-yaC4Pgh57SSbtkV1=-m8-qvDVswgG2L0a5ng@mail.gmail.com> In-Reply-To: <CADy1Ce6-yVcMtZmZW6diGu_3WADNqTFsGEcceSvgp8R0d%2B_vfA@mail.gmail.com> References: <CAFDHx1JFWH8FAJ3nbvZC3m6CCpbjCqrG01PYNMOHJSKo2HnWWQ@mail.gmail.com> <CADy1Ce6-yVcMtZmZW6diGu_3WADNqTFsGEcceSvgp8R0d%2B_vfA@mail.gmail.com>
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Thanks, mxtoolbox shows that I am on 13 out of 95 blacklists, so it seems I was sending out spam. Patrick On Mon, Jan 21, 2019 at 8:47 AM Kurt Buff - GSEC, GCIH <kurt.buff@gmail.com> wrote: > On Sun, Jan 20, 2019 at 10:34 PM Patrick Mahan <plmahan@gmail.com> 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=<pwascak@aol.com > >, > > 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. > > > > Thanks in advance, > > > > Patrick > > I'd suggest, as a first measure, going to https://mxtoolbox.com, and > looking at their reports for your domain name and your IP address. > > Understanding your config and your logs is good, but a quick review of > how others see your domain can point you in the right direction if > there's an error in your config. > > For instance, you might have inadvertently made your host an open > relay, and mxtoolbox will understand that. (that just an example - it > actually seems unlikely, as otherwise you'd be getting bounces from > more than just yahoo) > > Kurt > _______________________________________________ > 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" >
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