The two official TeamTalk servers have been attacked a lot lately by spammers. The spammers have attacked using VPNs which meant they could change their IP-addresses continuously making it hard to block them.
The TeamTalk SpamBot for TeamTalk Pro Server have now been updated so it can block all known VPNs. If you want your TeamTalk Pro Server to block all known VPNs then assign the user-right “User can ban users from server” to username firstname.lastname@example.org.
Note that once you enable VPN blocking then your server’s banlist will increase with 3000 entries.