# Adding and Editing Trusted Servers

The trusted servers table identifies servers that can connect to the local MiCollab Client Service without authentication.
Note: If the peered server IP address is changed, add or edit the IP address in the Trusted Server Details page, to view the presence state of the users.
Note: When you configure a peer MiCollab Client Service on the Peering tab, a Trusted Server entry is automatically created for the peer server with the "peer" server type. For peer trusted servers, you can edit the Description only.
To add or edit a trusted server:

1. Type a Description for the trusted server. The Description is limited to 64 characters in length and must contain alpha-numeric characters, dashes, and/or spaces.

2. Type the IP address/hostname for the server. The IP address must be a valid IP address or fully qualified domain name.

3. Select one of the following server types:

   - Presence: Trusted presence servers are permitted to receive presence information from the contacts on this MiCollab Client Service .

   - IM: Trusted IM servers are permitted to exchange Instant Messages with contacts on this MiCollab Client Service .

   - Peer: Trusted peer servers are permitted to exchange communication information with contacts on this MiCollab Client Service .

4. Click Create or Save. You are returned to the Enterprise Tab.

After you create a trusted server, you can edit the associated fields at any time.

Note: The following procedure must be done on MiCollab Client 5.1 to resolve peering on a server which had a changed IP address, failure to do so will cause peering not to work. Go to the Enterprise Tab, expand Trusted Servers, select the peered server whose IP address changed and in the Trusted Server Details page edit the field "IP address/hostname" with the correct IP address.

Note: Whenever the peered server address is changed, the server address must also be updated in the peer trusted servers list.