Date: Tue, 23 Jan 2001 10:26:58 -0600 From: Marcel Mason <mmason@nunanet.com> To: heckfordj@psi-domain.co.uk Cc: freebsd-isp@freebsd.org Subject: Re: sendmail rulesets Message-ID: <3A6DB0D2.5543A679@nunanet.com> References: <20010123092722.A234@freefire.psi-domain.co.uk>
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Jamie Heckford wrote:
>
> Hi,
>
> Bit stuck trying to implement the following:
Assuming that you are looking at blocking some of the pesky little virus
files that are running around these days .......
##### Check For ILOVEYOU in subject line....
HSubject: $>local_check_subject
D{BadSubject}"ILOVEYOU"
Slocal_check_subject
R${BadSubject} $#error $@ 5.7.1 $: 550 message rejected: Possible I
Love You Trojan infection
R$* ILOVEYOU $* $#error $@ 5.7.1 $: 550 message rejected: Possible I
Love You Trojan infection
#####
I inserted this under S98 in the sendmail.cf to deal with the LoveBug
last year and am putting a similiar one in this week to deal with
Snowhite and her 7 hombres'. CAVEATS: Make sure each line is a single
line, make sure that there is a TAB immediately before "$#error", if
it's a SPACE it won't work.
As there are sometimes quite good reasons for sending .exe files
(self-extracting archives for example) some users may complain if you
block them all, the above allows you to target a specific set of files.
Marcel
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