Target Skills:

Ability to set up Client Access Controls.

 
 
 

More Info:

Configuring Client Access to TCP Services (Admin Guide)
     

Set Up SMTP Access Controls

Let's set up an SMTP Access Control to deny SMTP service to the Communicator client on your machine.
 

Set Up the SMTP Deny Filter

Bring up the Messaging Server Console

1. Start Netscape Console, and open up the Messaging Server Console.

a. From a Unix shell with root privileges, 
# <server-root>startconsole
example: # /usr/netscape/server4/startconsole
b. When the console appears, enter your User ID and Password, and click OK. (see it)
example: admin, admin
c. Click on the + box next to your machine name. (see it)
d. Click on the + box next to Server Group. (see it)
e. Double click on the Messaging Server. (see it)


Go to Configuration Tab/Services/SMTP/Access Tab

2. Open up Configuration, Services.

a. Click on the "Configuration" tab. (see it)
b. Click on + box next to "Services" in the left pane (if not open already). (see it)
3. Go to SMTP Access form.
a. Click to highlight "SMTP" in the left pane. (see it)
b. Click on the "Access" tab. (see it)


Add and activate a SMTP Deny Filter

4. Set up a Deny filter to deny SMTP access from your machine.

a. Click on "Add" next to the Deny box (see it)
b. In the "Deny filter" dialog box, enter the following:
smtp:<your_machine_name>
(example: smtp:humpback.mcom.com) (see it)
c. Click OK to save your entry.
d. Click Save to save your changes.
5. Stop and restart SMTP services to make the changes take effect.
a. Click on "Services" in the left pane. (see it)
b. Click to highlight SMTP in the right pane. (see it)
c. Click on "Stop". (see it)
d. Wait for the "Service stopped successfully" message, and click OK. (see it)
e. Click on "Start". (see it)
f. Wait for the "Service started successfully" message, and click OK. (see it)

Verify SMTP Denial of Service

NOTE: If you haven't yet set up test messaging accounts and Communicator for messaging, please complete  Adding User Accounts/Create and Test Messaging Accounts , then come back here.

1. Using Communicator, try to send any message.
2. You should get a denial of service message. (see it)
 

Restore SMTP Services

1. Go to the SMTP Access form (see above).
2. Select "Delete" next to the Deny filter you just set up. (see it)
3. Select Save to save your changes. (see it)
4. Stop and restart SMTP services to make the changes take effect (see step 5 above).
5. Using Communicator, try to send a message.
6. The messaging server should now accept your message.
 
 
 
 
     

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