I wrote Ban Hammer to do that and it seems to work on regular WP. Haven’t fully tested it on MU, but it should work.
Ok thanks I will give it a try and let you know if it works ok with MU
I guess I upload this to the MU plugins folder and not the wordpress folder
I think you can put it in regular plugins (I’m honestly not sure the semantics between regular and mu-plugins, and which is sitewide and which is per blog…)
I just installed it into the MU plugins and it works perfectly. Thank you very much, a very useful tool indeed
this plugin bans website not email addresses
what if i want to ban one user ????