In my opinion an applescript and LaunchAgent approach is best for this.
Install a LaunchAgent into /Library/LaunchAgents and point it at an
applescript (with everyone read/execute permissions) containing your
mapped drive logic. The actual script wou...
Is your domain admin account actually located within that domain? If not
you may need to specify a domain before the username i.e.
otherdomainadministrator
The StartInterval key will re-run your job every 5 minutes, is that what
you intended? I would think you need /bin/sh (or bash) as the first
string in the ProgramArguments array in order for launchd to run the
script properly.