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<br><br><div><div id="SkyDrivePlaceholder"></div>> Date: Mon, 9 Jul 2012 13:13:26 +0200<br>> From: htd@fritha.org<br>> To: users@lists.fedoraproject.org<br>> Subject: Re: OT: Spam Problems<br>> <br>> On 09.07.2012, Errol Mangwiro wrote: <br>> <br>> > Recently I started receiving bounces from mail purporting to having<br>> > been sent from addresses in my domain. But the addresses don't<br>> > exist. So I thought that someone was faking the sender header and<br>> > sending spam.<br>> <br>> Please post the _full_ header of such a mail.<br>> <br>> > I added SPF and domain-key records to try to combat this. <br>> > However, either hotmail and yahoo don't check these or they <br>> > ignore them because I'm still getting spammed. <br>> <br>> It's trivial to fake any From: header, and there's nothing you can do<br>> about that, unfortunately. <br>> <br>> > Does anyone know of a way I can tighten fake sender policies & prevent this from occuring again?<br>> <br>> You can't prevent people from faking the From: header. Any spamfilter<br>> or network admin who tags email as spam according to From: is a moron.<br>> <br>> The correct way is to see if all these spam-emails originate from the<br>> same server, and send the admin an epost. To do this, a look at the<br>> complete and original header of one of those spammails is neccessary.</div><div><pre style="word-wrap: break-word; white-space: pre-wrap; ">
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please contact your helpdesk</pre>> <br>> -- <br>> users mailing list<br>> users@lists.fedoraproject.org<br>> To unsubscribe or change subscription options:<br>> https://admin.fedoraproject.org/mailman/listinfo/users<br>> Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines<br>> Have a question? Ask away: http://ask.fedoraproject.org<br></div> </div></body>
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