How can I test this at each workstation to see if port 25 traffic is actually being blocked

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Tags:
Exchange security
Firewalls
Microsoft Exchange
Workstations
This question was submitted on SearchExchange.com I have created rules in my firewall to block outgoing port 25 traffic from any computer except the email server. How can I test this at each workstation to see if port 25 traffic is actually being blocked? The firewall logs will show me blocked traffic but I don't know how to generate port 25 traffic from the workstation? The goal is to stop any Zombies that might get loaded from working. Thanks
ASKED: April 9, 2008  2:14 PM
UPDATED: April 9, 2008  2:39 PM

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Simply open a command prompt window on the machines and type <b>telnet ip.address.or.name 25</b> You can enter any external SMTP server address or name that is listening on port 25 to see if port 25 outbound is blocked.

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