user being banned...and i have no idea why..?

[cyclops1]

Hi All,

im fairly new to vb and i have a question,

In the admincp we haven't entered anything concerning the user banning options like ip's and emailadresses but a lot of our user are being banned...

in the banned users sections i see a list of banned users but they are banned by N/A, banned on is also N/A, ban period is permanent en ban time remaining is forever. Ban reason is blank...

Some users also recieve a message during registration that their email adress is banned, but like i said , we didnt alter the user ban options ( yet )

Are there some automatic bans in vb and if so , where are they stored,

If not , what could be causing this ???

Thanx for ur help !!!!

version is 3.6.1