Security Issues

[egotek]

I've recently had my SMTP service shutdown by my ISP, they're saying that I send out over 1000 emails a day. Now, I run a server at home, for personal use and my domain, nothing big. I have Exchange 2003 setup, again for personal use.

Anyway, I think that people may be using my exchange service to send out email, not using my accounts, just the SMTP service.
Here's a screen shot of what my queue always looks like:

http://www.egotek.com/imgother/misc/exch.jpg

I'm not a complete exchange newb, but I'm not an expert on it either. Any tips on setting it up so that only the server and the ONE computer connected to it can send email through it?

TIA

 

[quell]

First off you need a login/password to enter your site.
Check out these links maybe they can help:

How do I prevent Exchange 2000/2003 from being used as a mail relay?

http://www.petri.co.il/preventing_exchange_2000_2003_from_relaying.htm

Exchange Server 2003 Message Security Guide:

http://www.microsoft.com/technet/prodtechnol/exchange/2003/library/exmessec.mspx

Configure Exchange 2003 to check recipients in SMTP protocol

http://blogs.msdn.com/dlemson/archive/2003/10/17/52019.aspx

 

[egotek]

sorry, I fixed the picture, security got changed on it.

Anyhow, thanks for the links I'll check them out. Sounds like what I need from the descriptions.