Date: Sun, 11 Mar 2007 20:47:23 -0800 From: "Ed Zwart" <ed.zwart@gmail.com> To: "Jeffrey Goldberg" <jeffrey@goldmark.org> Cc: FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: Re: getting mail to work Message-ID: <6660f1280703112147p17ec0c6dq73f5167f58c96676@mail.gmail.com> In-Reply-To: <8685CC04-17C7-4A25-AD0A-565311EE3001@goldmark.org> References: <6660f1280703110845w52b8babapf2814da0ac6424ae@mail.gmail.com> <56A5B5E4-5644-4C50-9346-5EC9A372C3DB@goldmark.org> <eb7d4fbd9ce9f59269d552242aab679f@prodigy.net> <D0D191C3-C005-4993-AF1A-CFA76FA96F0A@goldmark.org> <6660f1280703112036y747c92a2w674ea46625830044@mail.gmail.com> <8685CC04-17C7-4A25-AD0A-565311EE3001@goldmark.org>
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Jeffrey, what you've suggested is what I've done. Thanks for the explanation! e. On 3/11/07, Jeffrey Goldberg <jeffrey@goldmark.org> wrote: > [mailed and posted] > > On Mar 11, 2007, at 10:36 PM, Ed Zwart wrote: > > > I'm still a little fuzzy on legal entries for hostname and domain. I > > set them to be mine, and it worked, and then for kicks, set it to > > google.com, and that worked too. I looked at the headers, and can see > > that the source can be traced back to my machine, but that still seems > > kind of easy to spoof. > > It is extremely easy to spoof, but google has taken steps to make it > easy for mail servers to detect if mail is spoofed. So if you send > mail from "google.com" without it coming from your network, than any > server making use of SPF (Sender Policy Framewokr) would immediately > identify it as a spoof, and will be blocked. > > To learn more about this system, see > > http://www.openspf.org/ > > > > Anyway, it's not something I'm overly worried > > about; I'm just not clear on what I SHOULD be using for hostname and > > domain. > > Well, what is a hostname for the machine that is sending the mail. > Since you are now going through your ISPs mailserver, it doesn't need > to be a hostname that can be looked up. So something like > > mailout.my.dom.ain > > should do fine. Use your real domain for the my.dom.ain part. The > more correct information you provide, the less mail from your system > will look like spam. But even "localhost.local" would be OK (though a > useful domain name would be better). Using "google.com" would make it > look like you are up to no good. > > -j > > > > > -- > Jeffrey Goldberg http://www.goldmark.org/jeff/ > >
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