Date: Mon, 9 Jun 2003 11:12:32 +0200 From: Borja Marcos <borjam@sarenet.es> To: James Godwin <james@organicwire.net>, <freebsd-isp@freebsd.org> Subject: Re: Block exe files with Sendmail Message-ID: <200306091112.33193.borjam@sarenet.es> In-Reply-To: <BB06BD93.5F65%james@organicwire.net> References: <BB06BD93.5F65%james@organicwire.net>
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This regular expressions were suggested by Hobbit in a Postfix mail list last year. It rejects any executable file, regardless of its name, extension, extension of the extension, MIME type, etc. /^TV[nopqr]....[AB]..A.A....*AAAA...*AAAA/ /^M35[GHIJK].`..`..*````/ Some people didn't like them, but I think this is a very effective way of dealing with viruses. These lists are applied always in some mail servers I administer, and they have rejected every infected message they have received. Of course, you must tell your users not to send executables, a bad practice. Borja.help
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