Re: Relaying nightmare

From: GAZ (contact_at_asd-bl.com)
Date: 12/28/04 

Date: Tue, 28 Dec 2004 16:14:42 +0100

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
    ... I wish it was SPAM. ... Unfortunately, it is relaying. ... the shop I actually ment from a whole range of IP addresses. ... So far we are blocking ranges of IP addresses ...
    (microsoft.public.exchange2000.admin)
  • Re: Relaying nightmare
    ... I wish it was SPAM. ... Unfortunately, it is relaying. ... the shop I actually ment from a whole range of IP addresses. ... So far we are blocking ranges of IP addresses ...
    (microsoft.public.exchange2000.general)
  • Re: Relaying nightmare
    ... I wish it was SPAM. ... Unfortunately, it is relaying. ... the shop I actually ment from a whole range of IP addresses. ... So far we are blocking ranges of IP addresses ...
    (microsoft.public.exchange2000.connectivity)
  • RE: email gateway (transparent) - full transparent
    ... The result in relaying is 100% accurate, but spam is comming from time to ... PGP / XML GATEWAY APPLIANCE ...
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  • Re: 6GB Transaction Logs a Day
    ... cound a co-worker of mine enabled relaying (they thought that relaying was ... blacklisted in any spam databases. ... > the only hint I've got is that mostly a public folder replication message ... > warnings but it resulted in no change. ...
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