I know this is probably illegal somewhere, but is there any way we can block Russian spammers with the email country suffix (.ru) who manually register on our Forum? It is so time consuming deleting them one by one. We get the odd one or two with other country suffixes, but by far the biggest number come from Russia.
Our Forum is quite specialised and we do not expect any legitimate Russian participation, but boy do they love to sell us all their prescription drugs, cheap cigarettes, sex toys etc