Due to two items not compatible (not usable, but still there) in SMP.
The Official Minecraft Server featuring the Skyrim Minecraft Mod!
The mod forum post can be found here.
What all does this server have?
This server has the Skyrim Minecraft Mod which contains most weapons from Skyrim (As far as v1.5.1 of the mod, I've implemented over 50 weapons or so, maybe 60+), other than the mod it's completely vanilla. This requires you to make allies on your own, build your own guilds and castles, and gather resources with your army, if you decide to make your own army. Since there are NPCs with this mod, there will always be something or someone to fight.
How do I join?
To join, go to the forum post linked above, or here, and install the mod.
After that, you can join the server using this IP: SkyrimMod.us.to
After that, you're free to start your adventure here in this server! Have fun!