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spam in Exchange Server 5.5

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8 replies

by rhiegen

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Dear Fellows,

I was invaded for a spam stream and it?s consuming too much resource in my network. The PDC and the BDC (which is also my mailserver), are running Backoffice Server 4.5. Now I really don?t know how to extinguish this spam from my Exchange Server 5.5. I have no firewall, only MS Proxy installed in my PDC.
Any ideas? Is there any application which can protect me against other future spams?

Thank you very much

Paulo

8 replies

by jayanth

Hi Paulo,
If by Spam, you mean that some unauthorized user is sending mails through your mail server, then theres a pretty easy way to block it.

In MS Exchange 5.5's, 'Internet Mail Connector', goto the 'routing tab' and select 'routing restrictions' there. Here select 'allow only people who authenticate to send mails' and add the IP Address of your LAN segment from which you want to allow mail relaying. If your users are using MS Outlook, then theres no problem. If using Outlook Express,then in the 'Server tab' select 'My outgoing server requires authentication' and give the corresponding exchange a/c username and password.

Hope this helps you.

--- Jayanth

by mcse75

Hi Paulo,

You can also try this solution.

From Exchange admin, go to the connections tab within your site, and select internet mail service.

Find the "Connections," tab in the IMC applet and you should have a "Message Filtering," button.From here you can add specific email addresses or entire domain extensions and prevent them from being delivered to your site.

Send me an email if you need any more help.

by rhiegen

How can I identify, using only Win NT 4.5 which email addresses or domains extensions are delivering messages from my site?

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