function DnsToIP(HostName: string): string;
type
tAddr = array[0..100] of PInAddr;
pAddr = ^tAddr;
var
I: Integer;
WSA: TWSAData;
PHE: PHostEnt;
P: pAddr;
begin
Result := '';

WSAStartUp($101, WSA);
try
PHE := GetHostByName(pChar(HostName));
if (PHE <> nil) then
begin
P := pAddr(PHE^.h_addr_list);
I := 0;
while (P^[I] <> nil) do
begin
Result := (inet_nToa(P^[I]^));
Inc(I);
end;
end;
except
end;
WSACleanUp;
end;

远控服务端常用的解析域名为IP的代码 比较容易实现 希望在这里结交许多朋友一起交流学习！