http://forum.melee.org/announcements/official-server-rules/
No intentional teamwounding/teamkilling during a round (teamkilling friends after a round ends is allowed, teamkilling random people is not)
Straight from the rules.
Wow that's totally news to me... I remember like 6 months ago someone kept killing me after round end like 2 or 3 times in a row and an admin was on and he kept saying in purple chat "TK's after round is over isn't against the rules!" when I complained about it. I always thought it was ok to TK after round end after that.
Wish I could remember which admin it was, it was so long ago.
Welp, Learn something new every day.
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24 hour ban does seem kind of harsh. Guy on duel server was killing my siege equipment I was trying to build, and nobody would even give him a 1 hour ban despite pics of me requesting him to stop, and pics of him continuing to kill it until it was dead (they said he was "new" so didn't deserve a ban). I don't see how killing someone after round end is a worse grief than killing siege equipment on duel servers (it takes a lot of time and C-materials to build siege equipment like catapult). This Donkey guy looks kind of new also judging by post count, but who really knows.