Added mail server DNS blacklist menu item.

src/sbbs3/ctrl/MainFormUnit.dfm

@@ -2416,6 +2416,11 @@ object MainForm: TMainForm
           Hint = 'RELAY.CFG'
           OnClick = CtrlMenuItemEditClick
         end
+        object DnsBlacklists: TMenuItem
+          Caption = 'DNS-based Blacklists'
+          Hint = 'DNS_BLACKLIST.CFG'
+          OnClick = CtrlMenuItemEditClick
+        end
       end
     end
     object FtpMenuItem: TMenuItem

src/sbbs3/ctrl/MainFormUnit.h

@@ -253,6 +253,7 @@ __published:	// IDE-managed Components
 	TMenuItem *Recycle2;
 	TMenuItem *Recycle3;
 	TAction *TelnetRecycle;
+	TMenuItem *DnsBlacklists;
     void __fastcall FileExitMenuItemClick(TObject *Sender);
 	void __fastcall ViewToolbarMenuItemClick(TObject *Sender);
 	void __fastcall FormClose(TObject *Sender, TCloseAction &Action);