Date: Thu, 21 Jun 2001 07:03:42 -0500 (CDT) From: J Bacher <jb@jbacher.com> To: faSty <fasty@i-sphere.com> Cc: "Fernando P . Schapachnik" <fschapachnik@vianetworks.com.ar>, freebsd-security@FreeBSD.ORG Subject: Re: need help filter this stupid virus. Sendmail didnt stop this. Message-ID: <Pine.OSF.4.21.0106210702230.23625-100000@ns.shawneelink.net> In-Reply-To: <20010620165047.B20771@i-sphere.com>
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> I agree, We should report to sendmail bug. >=20 > -trev You might first want to read the RFC regarding mail bounces. It is not a bug. > On Wed, Jun 20, 2001 at 07:47:13PM -0300, Fernando P . Schapachnik wrote: > > En un mensaje anterior, Erick Mechler escribi=F3: > > > You don't need the from. For example, try this: > > >=20 > > > [emechler@lucifer ~]$ cat /etc/mail/access > > > hahaha@sexyfun.net=09REJECT > >=20 > > It won't work, as the virus uses hahaha@sexyfun.net INSIDE the > > message itself and sendmail checks the From field from the envelope, > > which in this case is probably <> (empty). > >=20 > > I was about to report it as a bug to sendmail a few days ago, but > > then I thought there might be some option to change that behavior or > > some valid reason for sendmail to accept a empty mail from:. I > > haven't had time to research since then. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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