in start->settings->control panel->imail server, if you click on the 'SMTP
security' tab, there's a 'subnets' option that lets you specify exact IP
addresses
that mail is allowed to be relayed from - you'd have to put your whole
internal
network on that list, and specify its subnet, so that all PC's in your
network are
allowed to relay mail (withut having to type each IP out individually).
simon
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Scott Bishop
> Sent: Wednesday, 23 February 2000 11:30
> To: [EMAIL PROTECTED]
> Subject: RE: [IMail Forum] I am getting killed by spammers relaying on
> my servers.
>
>
> That is exactly what they are doing. Faking the IP address so it
> looks like
> it is sending internally.
>
> Although when you say:
>
> the way we solved it was by putting in each ip and or subnet as we went
> along.. much more tedious..
>
> Could you be more specific?
>
>
> Thanks for the quick response!!!
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Simon
> Sent: Tuesday, February 22, 2000 6:30 PM
> To: [EMAIL PROTECTED]
> Subject: RE: [IMail Forum] I am getting killed by spammers relaying on
> my servers.
>
>
> we had that very same problem.. it seemed that messages were only able
> to be sent to our internal network & virtual hosts, but from one of the
> spam 'authorities' we were sent an example of how the 'spammers' managed
> to get by, the first two attempts at using our mailserver as a relay were
> denied, then the 3rd time, it faked our IP so that it looked like it was
> coming thru our internal network - this was using imail 5.08 or something.
> the way we solved it was by putting in each ip and or subnet as we went
> along.. much more tedious.. with what shuld have been the same
> result using
> relay mail for local hosts only.
>
> simon
>
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED]]On Behalf Of Scott Bishop
> > Sent: Wednesday, 23 February 2000 10:54
> > To: [EMAIL PROTECTED]
> > Subject: [IMail Forum] I am getting killed by spammers relaying on my
> > servers.
> >
> >
> > I have several options selected
> >
> >
> > smtp security
> > relay mail for internal addresses only (on my network)
> > allow remote mail to local groups is checked.
> > check valid sender is checked
> > aut deny possible hack attempts is checked.
> > disable smtp vrfy command is checked.
> >
> > people are still able to relay mail from my server without
> authenticating.
> > Im about 1 day away from my UPPER ISP providor filtering mail to
> > my servers
> > cause I cant stop the spam! I have even denied access to the offenders
> > causing the spam, and emailed the proper authorites. But new
> spam servers
> > pop up everyday relaying through my secured smtp server (secured hah)
> >
> >
> > Ive been at this for 5 days. Can I get any suggestions??
> >
> >
> >
> >
> > 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.
>
> 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
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