Date: Fri, 9 Jan 2015 19:08:53 -0600 From: Adam Vande More <amvandemore@gmail.com> To: galtsev@kicp.uchicago.edu Cc: Erich Dollansky <erichsfreebsdlist@alogt.com>, FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: ?????Pls remove me I have been hacked!!! Message-ID: <CA%2BtpaK2a7C4tQSPcHAziFCfMj2NHH8jP0MefdcEaWLGyL6Ua6w@mail.gmail.com> In-Reply-To: <20713.128.135.70.2.1420774393.squirrel@cosmo.uchicago.edu> References: <20150108231912.C874F48940C@agent02.agent.vmail.yz.sinanode.com> <54AF13F6.5070105@kicp.uchicago.edu> <20150109092132.2f7f131e@X220.alogt.com> <20713.128.135.70.2.1420774393.squirrel@cosmo.uchicago.edu>
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On Thu, Jan 8, 2015 at 9:33 PM, Valeri Galtsev <galtsev@kicp.uchicago.edu> wrote: > > On Thu, January 8, 2015 7:21 pm, Erich Dollansky wrote: > > Hi, > > > > On Thu, 08 Jan 2015 17:34:14 -0600 > > Valeri Galtsev <galtsev@kicp.uchicago.edu> wrote: > > > >> Is that only me or others noticed too that every first message of new > >> thread on this list if followed by junk like this. This apparently > >> was delivered from domain > >> > > this is an old thing. It comes and goes. > > > >> sina.com.cn > >> > >> Would that be reasonable to reject all mail of that origin on the MX > >> level? > >> > > It is not that easy. The sender addresses change very often. > > > > That is what I assumed from the very beginning. With these things on my > servers I usually do this: I find out which domain sender's MX serves. > Then I send complaint to > > abuse@that.domain.com > > No one usually gets back to me (at least from that geoip location no one > ever did). Then I send similar complaint appended with note that abise@ > never came back to me to postmaster@that.domain.com. After that I set my > MX to reject mail with message that that domain didn't respond abuse > complaint. [Did I miss something decent sysadmin should do in the case?] > Email is intrinsically open and spoof-able. Spending time on it further than marking it spam is almost universally a waste of time. Get a better spam filter is the answer. In other words: https://craphound.com/spamsolutions.txt -- Adam
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