Annoying Messages

  • Thread starter Pedro Bastos
  • Start date Views 942
P

Pedro Bastos

Hello,

I have an Exchange Server 2003 up and running without any major
problems.

However I am not able to stop some messages coming from servers
outside my domain. Those messages have the To: and From: header field
the same address (which is inside my domain) i.e. To:
user1@mydomain.com and From: user1@mydomain.com.

Yet those messages are unsolicited email (aka SPAM) and want to stop
them and they are coming from an outside IP address.

Any tip to block those kind of messages?

Thanks in advance,

Pedro Bastos
 
L

Lanwench [MVP - Exchange]

Pedro Bastos <petrivs@gmail.com> wrote:
> Hello,
>
> I have an Exchange Server 2003 up and running without any major
> problems.
>
> However I am not able to stop some messages coming from servers
> outside my domain. Those messages have the To: and From: header field
> the same address (which is inside my domain) i.e. To:
> user1@mydomain.com and From: user1@mydomain.com.
>
> Yet those messages are unsolicited email (aka SPAM) and want to stop
> them and they are coming from an outside IP address.
>
> Any tip to block those kind of messages?
>
> Thanks in advance,
>
>
> Pedro Bastos


This is called spoofing. It's very annoying. You can block a lot of this
**** if you install SP2 and enable filtering.

http://www.petri.co.il/block_spam_with_exchange2003_imf.htm
http://www.msexchange.org/tutorials/Intelligent-Message-Filter-version-2-IMF-v2.html

 
J

John

IMF filters those type of mail?? Isn't Recipient Filtering the one you want?
It is to block incoming mail sent to some_random_names@mydomain.com

I got my firewall set to block all incoming mail From: *@mydomain.com

"Lanwench [MVP - Exchange]"
<lanwench@heybuddy.donotsendme.unsolicitedmailatyahoo.com> wrote in message
news:emK$k8C8JHA.1424@TK2MSFTNGP02.phx.gbl...
>
> This is called spoofing. It's very annoying. You can block a lot of this
> **** if you install SP2 and enable filtering.
>
> http://www.petri.co.il/block_spam_with_exchange2003_imf.htm
> http://www.msexchange.org/tutorials/Intelligent-Message-Filter-version-2-IMF-v2.html
>
>


 
L

Lanwench [MVP - Exchange]

John <a> wrote:
> IMF filters those type of mail??


Some, sure. But I mentioned *filtering* ... not just the IMF.

> Isn't Recipient Filtering the one
> you want? It is to block incoming mail sent to
> some_random_names@mydomain.com


No, that won't do it. You could use sender filtering and put *@mydomain.com
if you don't have any POP or IMAP users who relay through your server.
>
> I got my firewall set to block all incoming mail From: *@mydomain.com


>
>
> "Lanwench [MVP - Exchange]"
> <lanwench@heybuddy.donotsendme.unsolicitedmailatyahoo.com> wrote in
> message news:emK$k8C8JHA.1424@TK2MSFTNGP02.phx.gbl...
>>
>> This is called spoofing. It's very annoying. You can block a lot of
>> this **** if you install SP2 and enable filtering.
>>
>> http://www.petri.co.il/block_spam_with_exchange2003_imf.htm
>> http://www.msexchange.org/tutorials/Intelligent-Message-Filter-version-2-IMF-v2.html


 
J

John


"Lanwench [MVP - Exchange]"
<lanwench@heybuddy.donotsendme.unsolicitedmailatyahoo.com> wrote in message
news:%230vuRYD8JHA.6136@TK2MSFTNGP03.phx.gbl...
> John <a> wrote:
>
>> Isn't Recipient Filtering the one
>> you want? It is to block incoming mail sent to
>> some_random_names@mydomain.com

>
> No, that won't do it.


I know it won't block "mail from" spoofing. I meant to say that it blocks
half of the problem; that is: it blocks "mail to" non existent addresses.

> You could use sender filtering and put *@mydomain.com if you don't have
> any POP or IMAP users who relay through your server.


This is the other half of the problem. I'm not using sender filtering to
block all incoming mail that claim to be from some random names at our
domain. My firewall already filters those out. It works great.

 
R

Rich Matheisen [MVP]

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