In the standard CSS game when playing you only see the phrase ‘x attacked a teammate’ if the teamwound happened on your team.
If you turn on the server var mani_tk_show_opposite_team_wound and set it to 1, teamwounds will be reported to both sides and to spectators.
This can be useful to admins as they may not know that team wounding is occurring on the opposite side under normal circumstances.
Spam prevention is included to not repeat showing the same message if the team wounds happen with 0.25 seconds of each other.