Re: MX/ISP BLOCK

I am top posting. Sorry for that. The earlier script will simply throw
the email into a blackhole.
If you want the script to bounce it.
#!/bin/sh
domain=$1
/var/qmail/bin/dnsmxip $1 |awk '{print $2}'| while read line
do
    if [ " $line" = " w.x.y.z" ] ; then
        cat > /dev/null
        printf "h\0DThis ISP is blocked.\nMessage discarded\n\0"
        exit 0
    fi
done
exec /var/qmail/bin/qmail-remote.org $*

On Fri, 8 Feb 2019 at 22:10, Rejaine Silveira Monteiro
<[email protected]> wrote:
>
> thank you! the script is working fine!!  is only giving problems in
> bounce mail, like:
>
> @400000005c5da7a03aff7a3c info msg 31371954: bytes 39440 from <> qp
> 21332 uid 365
> @400000005c5dae4821b48c34 starting delivery 18429: msg 31371954 to
> remote [email protected]
> @400000005c5dae4828f918fc delivery 18429: failure:
> I_(qmail-remote)_was_invoked_improperly._(#5.3.5)/
>
> is not a big problem, but do you have any idea what it might be?
>
>
>
>
> Em sex, 8 de fev de 2019 às 13:59, Manvendra Bhangui
> <[email protected]> escreveu:
> >
> > On Fri, 8 Feb 2019 at 20:49, Rejaine Silveira Monteiro
> > <[email protected]> wrote:
> > >
> > > Is there any way to temporarily  block or ignore all mails sending
> > > (qmail-send) to a particular MX (ISP)? There is an internet provider
> > > in Brazil that is widely used by thousands of customers (locaweb).
> > > This ISP is off the air and hundreds of messages from multiple clients
> > > are standing in line. The problem is that this is generating a huge
> > > delay in delivering to other customers of other ISPs.
> >
> > You can do something like this temporarily (But test this out on a test system).
> >
> > 1. shutdown down qmail
> >
> > 2. mv /var/qmail/bin/qmail-remote /var/qmail/bin/qmail-remote.org
> >
> > 3. Put the compiled dnsmxip in the qmail-1.03 source directory in /var/qmail/bin
> >
> > 4. Write the following script as qmail-remote in /var/qmail/bin. Asume
> > w.x.y.z is the IP of the ISP
> > #!/bin/sh
> > domain=$1
> > /var/qmail/bin/dnsmxip $1 |awk '{print $2}'| while read line
> > do
> >     if [ " $line" = " w.x.y.z" ] ; then
> >         exec cat > /dev/null
> >     fi
> > done
> > exec /var/qmail/bin/qmail-remote.org $*
> >
> > 5. chmod +x /var/qmail/bin/qmail-remote
> > 6. Restart qmail
>
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-- 
Regards Manvendra - http://www.indimail.org
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