That's very true, I haven't thought of that. Thanks. Any smarter idea? Maybe I can filter emails coming from my host email address and then make sure they're not recieved: from unknown source (spammers has the habbit of including your hostname in the from: field, so that you'll whitelist them)
On 6/19/06, Ehud Karni <[EMAIL PROTECTED]> wrote:
On Mon, 19 Jun 2006 04:44:25 -0700 (PDT), E Leibovich wrote: > > Is there any automated tool to bounce email not from > the original server? That is, is there a tool that > bounces back emails claiming they're from hostA (their > from:[EMAIL PROTECTED]) however they're really from hostB > (that is, recieved: from hostB...). > This seems a good way to prevent many spam messages > that claim to originate from your server. > Is it a good idea? > Is there any written script that does so? This is NOT a good way. Many mailing lists and other sources (e.g. small offices sending their mail through their ISP) will bounce. Even your email - from: <[EMAIL PROTECTED]> - had come from [EMAIL PROTECTED] Remember - all the headers (except the last "Received:", created by your computer) may be forged. Ehud. -- Ehud Karni Tel: +972-3-7966-561 /"\ Mivtach - Simon Fax: +972-3-7966-667 \ / ASCII Ribbon Campaign Insurance agencies (USA) voice mail and X Against HTML Mail http://www.mvs.co.il FAX: 1-815-5509341 / \ GnuPG: 98EA398D <http://www.keyserver.net/> Better Safe Than Sorry
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