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Exchange server 2007 Spam

I have a exchange server 2007.

Accepted domains:

mydomain.de --Internal Relaydomain
mydomain.com -- External Relaydomain(standard)

i got many spams Internal Relaydomain.
example:
hotelbook.mydomain.de etc

How can i block them? Pls immediantlly help !!!!!
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apollo-13
Asked:
apollo-13
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4 Solutions
 
Julian123Commented:
Please enable the Exchange 2007 anti-spam features: http://technet.microsoft.com/en-us/library/bb123559(v=EXCHG.80).aspx.
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apollo-13Author Commented:
anti-spam features for internal Relay ? which one?
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Simon Butler (Sembee)ConsultantCommented:
I would be surprised if the internal relay configuration has caused your server to be abused.
Ensure that you don't have externally secured enabled on any of the Receive Connectors.

The most likely cause is a compromised account. The windows logs might help you identify which account it is.

Enabling the antispam features isn't really going to help, although I would enable the recipient filter so that you are protected against NDR spam.

Simon.
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apollo-13Author Commented:
Enabling the antispam features isn't really going to help ---It didnt help
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apollo-13Author Commented:
i checked "Ensure that you don't have externally secured enabled on any of the Receive Connectors.
" they were no marked
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apollo-13Author Commented:
Normally my isp control mails from extern .They have spam filter for us. Last week they changed score to 12 then my internal relay Domain gets Spams.
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Simon Butler (Sembee)ConsultantCommented:
Do your MX records point at the ISP?
If so, is your firewall locked down to only accept SMTP traffic from the ISP?

You need to look at the headers of the spam messages to see if they came via the ISP. If they did then you need to query with the ISP why so much is getting through.

Simon.
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apollo-13Author Commented:
Do your MX records point at the ISP? -yes smart host SMTP we use

our isp filter spam mails before come to us. My isp says I do not Need any Exchange Server
SPAM FILTER because disturb their Server . for that reasen I did Exchange Server Spam filter deactiveded .
They says it my internal Problem if accepted Domain is internal Relay Domain.

You need to look at the headers of the spam messages to see if they came via the ISP. If they did then you need to query with the ISP why so much is getting through.
 


I looked they are from External IP. (like .ru,ca etc)
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apollo-13Author Commented:
I have a question. This a internal relay Domain(mydomain.de) but not standard.
we use other Domain (mydomain.com)for emails.

is this spam Problem (mydomain.de) Comes from my Exchange Server or from ISP ?
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Simon Butler (Sembee)ConsultantCommented:
I don't think you understood what I asked.
If you look at the headers of the spam messages you can see what servers the messages went through. You need to verify that the messages came through the ISP.

Why do you have a domain set as an internal relay domain? Do you have another non Exchange server that the messages are delivered to?

The ISP is also talking rubbish about the Exchange filters interferring with their own. Most of the Exchange filters are content based so will take place after delivery. Almost certainly they don't want your server bouncing email back to them, via recipeint fitlering, SPF record, blacklist lookup etc, because they cannot cope with it or it will look like their solution isn't working as well as should.

Simon.
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