Maybe this will help:

Be sure that you have the same "generic" server name in both dsm.sys and
dsm.opt files! Have you? I am not sure but I think this generic name
could not be longer than 8 chars.

Check the installation books in client books section.

Brian Jones wrote:

>      John,
>
>      Maybe your problem is DNS related. Try using an explicit IP
> address
>      for the TCPServeraddress. Before that try pinging both the server
> and
>      client (I'm sure you already did this).
>
> ______________________________ Reply Separator
> _________________________________
> Subject: PUBLIC:      SCO Commandline client
> Author:  JCirocco (JCirocco AT GW.CTG DOT COM)
> Date:    7/15/97 12:07 PM
>
> Hello folks,
>
> Has anyone out there worked with the SCO unix backup client?  I
> attempt
> to load DSMC but get TCP/IP failure.  I have specified the following
> in my
> DSM.SYS:
> Servername
> TCPPort
> TCPServeraddress
>
> I have also registered a client.
>
> Any help will be greatly appreciated.
>
> John Cirocco
> Computer Task Group, Inc.