So I'm creating a project which will have 3 servers, 3 routers, 21 pc and will be divided into 3 networks. Each servers will have different jobs to do. One will be holding the DNS, the other will hold HTTP, and last will be SMTP/POP3. I've done setting up their address including the 21 pcs and their respective network addresses. Whenever I ping network 1 to the DNS and other servers, it returns without any problem, but the network 2 and 3 keeps return "Request Timeout". I've done the same procedure as I had done in network 1, the network 2 and 3 keeps return request timeout. I've also set the email for each pc, only the network 1 has successfully done the job of sending and receiving the emails. Here's the pkt file.
