Baron's Island Tekkit Classic
Baron's Island is an evergrowing community that currently has four servers, this being one of them. For more info, see the website link. The server is dedicated and up 24/7 (except for updates, etc.). The only banned items are ones that bypass anti-grief, cause server lag/crashes and etc. There is a range of plugins to help you and keep you safe from hackers and griefers. One plugin is that of ecoCreature. With this plugin, you can earn cash from killing mobs. You can also donate to the server at http://www.baronsisland.co.uk/minecraft_donate.html . Depending on how much you donate, you can unlock even more!
Voting will give you 1 diamond, 1 energy condenser, 1 energy collector (MK1), $2000 and 500 claim blocks!