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exchange 2007 security problem

Hi Experts,

I have running exchange 2007 on win 2008.
Since some weeks I have a problems with spam.
every day I get emails with the subject :MAILER-DAEMON@mail.nt-tech.com.au

Lets say our domain is email.at
The sender of the email is our domain, but the user is not available it is just a weird number, like this: From: "Vigara.Info" <5B0785A14@email.at>

What can I do to stop this or analyse ?
  • 2
1 Solution
First Check if your Server is open for relay or not. If Yes then stop it.
Check on your firewall for the traffic and see if you can backtrack the email from which source IP it is coming and find out if that IP is that of your environment or not and black that.

Eprs_AdminSystem ArchitectAuthor Commented:
ok I will check this
Eprs_AdminSystem ArchitectAuthor Commented:

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