<div>
<div class="content wysiwyg-content">
Hi,<br />
<br />
We have a Sonicwall 3600 with SonicOS Enhanced 6.1.1.9-30n. Recently we had a virus on one of our computers and the result was it sending emails out and blacklisting our IP. Is there a way to set the sonicwall to only be able to send email from our Exchange servers internal IP and block everyone else behind it?<br />
<br />
Thanks!
</div>
</div>


Hi,

We have a Sonicwall 3600 with SonicOS Enhanced 6.1.1.9-30n. Recently we had a virus on one of our computers and the result was it sending emails out and blacklisting our IP. Is there a way to set the sonicwall to only be able to send email from our Exchange servers internal IP and block everyone else behind it?

Thanks!

Blocking all smtp traffic from network except mail server

Hardware-based firewalls provide more sophisticated protection for inbound and outbound traffic than the simple Windows software firewall or the basic NAT firewalls found in routers. These devices implement techniques such as stateful packet inspection, deep packet inspection, and content filtering; and may include built-in antivirus and anti-malware protection.

Hardware Firewalls

Network security consists of the policies adopted to prevent and monitor authorized access, misuse, modification, or denial of a computer network and network-accessible resources. Network security involves the authorization of access to data in a network, and covers a variety of computer networks; conducting transactions and communications among businesses, government agencies and individuals. Networks can be private, such as within a company, and others which might be open to public access.