Maybe they will want to use your smtp because most ISP's do require that the
return address be from their domain to help stop spam, (the place I worked
for did, plus we hosting a few thousand sites from out of state) and if it
is business he is hosting then it will not look to good with one return
address and a different reply-to address.
The ISP's can always give them the ip range(s) and if not you can always go
to whois at Network Solutions and get the IP's by searching for the ISP's
name. This could be alot of work but....
Below is what we ended up doing.
We got as many of the IP classes as we could, then we added the others as we
got calls in. We
explained it as we were getting outside interference from un-ethical mailers
and were creating a setup that would halt this and make mail service faster.
No lying here, just explaining it in a positive way.
The other thing that you could do is try to get his IP and put it in the
kill list or if he is on a dynamic IP then kill his whole class.
Typed like this 90.0.0.0 255.255.255.0 this kills all 254 usable
addresses. This also can be used in the smtp access list to let in a whole
class but deny others.
----- Original Message -----
From: Fernando Monteiro <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, September 14, 1999 9:36 PM
Subject: Re: [IMail Forum] Stopping Spam
>
>
>
> Other suggestion...
>
> If I understood, "you" are a hosting company.
>
> You can deny relay, and ask your customers to use their IPS's SMTP.
>
> You they use yours, their messages do this way:
>
> customer's modem >> ISP >> Internet >> Your SMTP >> Destination
>
> And if your customers use the ISP SMTP:
>
>
> customer's modem >> ISP >> Destination
>
> Less hops, less traffic, more speed.
>
> >
> >Tell them to log in to the SMTP server. Most clients can do that with no
> >trouble at all. They will still be able to send mail through you as long
> >as
> >they log in.
> >-V
> >----- Original Message -----
> >From: John Melchiori <[EMAIL PROTECTED]>
> >To: <[EMAIL PROTECTED]>
> >Sent: Tuesday, September 14, 1999 4:02 PM
> >Subject: [IMail Forum] Stopping Spam
> >
> >
> > > Here is my problem. I have been found by a spammer who used my system
to
> > > send his junk. What I need to know is how to stop this. My
understanding
> >is
> > > that I can simply say do not realy mail for everyone and select the
> >relay
> > > mail for addresses.
> > >
> > > My problem is that people who host with me and utilize their domain
name
> >as
> > > their smtp come from all over the place and many different isp's. How
> >would
> > > I indicate an address if I or they do not know what it is?
> > >
> > > And if I place just my class c in the address would that not prohibit
> >them
> > > from sending mail thru their domains?
> > >
> > > I am thoroughly confused!
> > >
> > > Any assistance would be appreciated.
> > >
> > > John
> > >
> > > Please visit http://www.ipswitch.com/support/mailing-lists.html
> > > to be removed from this list.
> > >
> >
> >Please visit http://www.ipswitch.com/support/mailing-lists.html
> >to be removed from this list.
>
> ______________________________________________________
> Get Your Private, Free Email at http://www.hotmail.com
> Please visit http://www.ipswitch.com/support/mailing-lists.html
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>
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