Re: Relaying nightmare

From: Kevin Longley (kwlongley_at_cirtronics.com)
Date: 12/29/04 

Date: Tue, 28 Dec 2004 19:21:42 -0500

Are you saying that they are relaying by using your Exchange smtp service to
send spam to your internal users?

"GAZ" <contact@asd-bl.com> wrote in message
news:cqrtce$b33$1@ariane.blic.net...
> God, I wish it was SPAM. Unfortunately, it is relaying. When I said all
> over the shop I actually ment from a whole range of IP addresses. Sorry, I
> do get carried off sometimes.
>
> We have an anti- SPAM module from BitDefender and it works great, but
> realying is another issue. So far we are blocking ranges of IP addresses
> that used for relaying, but little buggers just change the IP address and
> the next morning come another full SMTP log.
>
> Is there a way in Exchange 2000 (or Ex2K3 as we are soon changing) to
> actually prevent relaying and allow only e-mails addressed to our domain
> to enter the system?
>
> Thanks,
>
> GAZ
>
>
>
> "Rich Matheisen [MVP]" <richnews@rmcons.com.NOSPAM.COM> wrote in message
> news:pvh0t0doc7o7prr077mk88aiq2ios1rurb@4ax.com...
>> "GAZ" <contact@asd-bl.com> wrote:
>>
>>>I would be most grateful if you could help me with a 'small' relaying
>>>problem.
>>>
>>>We have the Exchange 2000 enterprise server with the SMTP virtual server
>>>behind the ISA 2000 firewall.
>>>
>>>Basically, several days ago we 'started' relaying messages all over the
>>>shop. The Relay tab is set to 'Only listed below' with nothing in the
>>>list
>>>and the 'Allow all computers...' is unchecked. However, spam still passes
>>>through.
>>
>> Spam and relaying are not the same problem. "All over the shop" sounds
>> like the problem is spam and no relaying.
>>
>>>We started putting whole ranges of IP address in the banned list on
>>>the connection tab. The problem is that the spammers change ip addresses
>>>constantly and we have to extend the list almost on a daily basis. Never
>>>mind the bandwidth gone to waste, but we definitely do not want to end up
>>>on
>>>a black list.
>>
>> If you need a quick fix, one that relies only on DNS RBL's and limited
>> checking on the message body, try Open Relay Filter fro Vamsoft
>> (http://www.vamsoft.com/orf). Other inexpensive software might be GFI.
>> More expensive software is available, as are e-mail appliances that
>> are much more capable of dealing with SMTP and the Internet than
>> Exchange will ever be.
>>
>>>Is there a one time 'kill all' solution that would prevent spammers from
>>>using our server?
>>
>> If you find one, the world will be eternally grateful.
>>
>> --
>> Rich Matheisen
>> MCSE+I, Exchange MVP
>> MS Exchange FAQ at http://www.swinc.com/resource/exch_faq.htm
>
>

Relevant Pages

  • Re: Relaying nightmare
    ... Are you saying that they are relaying by using your Exchange smtp service to ... I wish it was SPAM. ... Unfortunately, it is relaying. ... So far we are blocking ranges of IP addresses ...
    (microsoft.public.exchange2000.admin)
  • Re: Relaying nightmare
    ... Are you saying that they are relaying by using your Exchange smtp service to ... I wish it was SPAM. ... Unfortunately, it is relaying. ... So far we are blocking ranges of IP addresses ...
    (microsoft.public.exchange2000.general)
  • Re: Relaying nightmare
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