troubleshooting Question

Exchange 2003 - How do I stop spoofed e-mails on the intranet?

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Lyndy333Flag for United States of America asked on
Email ClientsExchange
25 Comments2 Solutions314 ViewsLast Modified:
So now, what I have going on is a mm virus on the intranet? Virus for sure. Server is Exchange 2003. Clients use Outlook 2003.  We are receiving e-mails from spoofed addresses on our intranet i.e. and not  I can identify the IP address where they are coming from, but am unable to block the IP address or the sender.  I use SMSSMTP v4.1.15.47 which is catching most of the e-mails that try to come in, but not all, obviously.  I have not been able to identify the virus, but so know that the spammed e-mails are not getting out of our network - yet. Any suggestions?
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