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Setting Access to the POP3 Server

You can specify an IP address or set of IP addresses that are either granted access to the POP3 server or denied access. Computers that do not have access to the POP3 server computer will not be allowed to create a connection.

To deny access to a specific computer or group of computers:

  1. Click Control access. The Access Control dialog box appears.
  2. Select Granted Access.
  3. Click Add. The Deny Access On dialog box appears.
  4. In the IP Address box, enter the IP address of the computer to be denied access to the POP3 server.
To deny access to a group of computers, select the Group of Computers option. In the IP Address and Subnet Mask boxes, enter the IP address and subnet mask for the group to be denied access. For example, if you have a class C address space of 156.21.50.0, enter a group address of 156.21.50.0 and a subnet mask of 255.255.255.0. This will deny access to those 254 computers.
  1. Click OK to add the IP address(es) to the list.
Access will be granted to all computers except those listed.
  1. Click Apply to save the changes. Note that you must stop and restart the service for the changes to take affect.

To grant access to a specific computer or group of computers:

  1. Click Control access. The Access Control dialog box appears.
  2. Select Denied Access.
  3. Click Add. The Grant Access On dialog box appears.
  4. In the IP Address box, enter the IP address of the computer to be granted access to the POP3 server.
To grant access to a group of computers, select the Group of Computers option. In the IP Address and Subnet Mask boxes, enter the IP address and subnet mask for the group to be granted access. For example, if you have a class C address space of 156.21.50.0, enter a group address of 156.21.50.0 and a subnet mask of 255.255.255.0. This grants access to those 254 computers.
  1. Click OK to add the IP address(es) to the list.
Access will be denied to all computers except those listed.
  1. Click Apply to save the changes. Note that you must stop and restart the service for the changes to take effect.

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