Re: english text only?

[Kenneth Loafman]

To filter out Asian MIME content, use the Content-Type checks in
Postfix's body_checks file as well.  Someone else can work out the
filters for Asian content when no obvious clues are available.  These
filters are catching about 75% of all the Asian language coming through
info-cvs and others.

Now to work on a filter that will nuke only mail from open-relays in
Asia, since I still need the legit mail to come through.

...Ken

Kenneth Loafman wrote:
> 
> Previous posts indicate that the list owner, gnu.org. does not believe
> in filtering.  Not sure what their stand on open relays is, but they
> will not filter or block email.
> 
> I don't like blocking entire domains either, so I came up with a
> solution that only blocks Asian language email.  It uses the Subject:
> and Content-Type: headers to isolate the character set and blocks the
> most common Asian types.  This is a postfix header_check file.  You'll
> need to adapt it to your client or mailer as needed.
> 
> # header checks to kill Asian language spam
> 
> /^Subject:.*=\?big5\?/                          REJECT
> /^Content-Type:.*charset=.*big5/                REJECT
> 
> /^Subject:.*=\?euc-kr\?/                        REJECT
> /^Content-Type:.*charset=.*euc-kr/              REJECT
> 
> /^Subject:.*=\?gb2312\?/                        REJECT
> /^Content-Type:.*charset=.*gb2312/              REJECT
> 
> /^Subject:.*=\?iso-.*-jp\?/                     REJECT
> /^Content-Type:.*charset=.*iso-.*-jp/           REJECT
> 
> /^Subject:.*=\?koi8\?/                          REJECT
> /^Content-Type:.*charset=.*koi8-r/              REJECT
> 
> /^Subject:.*=\?ks_c_5601-1987\?/                REJECT
> /^Content-Type:.*charset=.*ks_c_5601-1987/      REJECT
> 
> This is only a start, but its shown good sucess for getting rid of the
> gibberish without nuking anything you might want.
> 
> ...Thanks,
> ...Kenneth
> 
> Ryan Speed wrote:
> >
> > It seems to be a trend lately, I'm on a few lists that get spammed with
> > this bullshit.  I think the best bet would be to disallow mail from
> > people who aren't subscribed to the list.
> >
> > ryan
> >
> > > -----Original Message-----
> > > From: address@hidden [mailto:address@hidden
> > > On Behalf Of Eric Siegerman
> > > Sent: March 19, 2002 10:38 AM
> > > To: cvsInfo
> > > Subject: Re: english text only?
> > >
> > >
> > > On Tue, Mar 19, 2002 at 07:15:12PM +0100, Leif Hanack wrote:
> > > > i'm new to this mailing-list and i'm wondering myself why i receive
> > > > mails with strange characters in it. i guess it is japanese
> > > or stuff
> > > > like that.
> > >
> > > It's spam.  The rest of us don't want it either!
> > >
> > > > nevertheless, how can i get rid of it?
> > >
> > > I wish I knew...
> > >
> > > --
> > >
> > > |  | /\
> > > |-_|/  >   Eric Siegerman, Toronto, Ont.        address@hidden
> > > |  |  /
> > > "Outlook not so good."  That magic 8-ball knows everything!
> > > I'll ask about Exchange Server next.
> > >       - Anonymous
> > >
> > > _______________________________________________
> > > Info-cvs mailing list
> > > address@hidden
> > > http://mail.gnu.org/mailman/listinfo/info-cvs
> > >
> >
> > _______________________________________________
> > Info-cvs mailing list
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> > http://mail.gnu.org/mailman/listinfo/info-cvs
> 
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