[ale] Porn filters

[Adrin]

There is an option in your sendmail configuration. I can't remember it but if you read
through it you will see it.
What the heck I will look it up.

Other dnl We strongly recommend to comment this one out if you want to protect
Other dnl yourself from spam. However, the laptop and users on computers that do
Other dnl not have 24x7 DNS do need this.
Feature FEATURE(`accept_unresolvable_domains')dnl

I have not messed with that option yet.

Adrin


> -----Original Message-----
> From: ,,, [mailto:fultongr at greenie.frogspace.net]On Behalf Of Fulton
> Green
> Sent: Monday, October 07, 2002 11:21 AM
> To: Matthew Brown
> Cc: 'Fulton Green'; 'Atlanta Linux User Group (E-mail)'
> Subject: Re: [ale] Porn filters
>
>
> If you did it at the iptables layer, your SMTP server wouldn't be able to
> send out a nastygram. iptables might need to take the REJECT action in order
> for the sender's SMTP service to detect a problem.
>
> Dammit, Jim, I'm a software developer, not a sysadmin. :)
>
> On Mon, Oct 07, 2002 at 11:10:52AM -0400, Matthew Brown wrote:
> > Sounds intersting...  I guess one would accomplish this with iptables
> > when the SMTP server is trying to connect to the client's SMTP server?
> > Or would you suggest doing it at the SMTP server side?
> >
> > Has anyone tried something like this in iptables?
> >
> >
> > -----Original Message-----
> > From: ,,, [mailto:fultongr at greenie.frogspace.net] On Behalf Of Fulton
> > Green
> > Sent: Monday, October 07, 2002 10:59 AM
> > To: Matthew Brown
> > Cc: 'Atlanta Linux User Group (E-mail)'
> > Subject: Re: [ale] Porn filters
> >
> >
> > I've noticed (from personal experience) that MX.CompGen.com now blocks
> > incoming mail from servers that don't have matching forward and reverse
> > address lookups. That might block out a few legit servers (which should
> > probably be fixed anyway), but it will definitely take care of 80% of
> > all
> > spam (pr0n/pyramids/mortgages/health aids/etc.), with the other 20%
> > either
> > being easily-blocked professional spammers or easily-contacted legit
> > I[SP]Ps that happen to have a yet-to-be-discovered spammer . Your server
> > daemon could be set up to automatically send a nastygram to legit
> > addresses
> > not following the forward/reverse lookup paradigm.
> >
> > On Mon, Oct 07, 2002 at 10:45:19AM -0400, Matthew Brown wrote:
> > > I have a client asking for some way to stop receiving all the porn
> > they
> > > are barraged with.  They want to filter stuff not so much on the web
> > > side, but also on the email side.  For some reason they get a ton of
> > > porn mail.
> > >
> > > Beyond simply setting up email client rules and education, does anyone
> > > have a silver bullet?
>
> ---
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>


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