Jose, > What do SA guys say about opening port 25 in data servers? They should say that it is entirely unnecessary and that you need to do some further reading of some fine manual. How about if you generate a series of emails from a client application with a packet sniffer running and run some netstat commands? If you do, you will see that no connections will occur on the oracle server on port 25. The program that generates the email on the oracle server is acting as a client, and does not perform a server-to-server connection. It uses an unprivileged port (above 1024) to connect to the mail server of interest - on port 25 of the remote server - running the mail server daemon. Paul On Thu, 28 Oct 2004 18:04:24 +0200, Jose Manuel Quesada <jose.manuelquesada@xxxxxxxxx> wrote: > What do SA guys say about opening port 25 in data servers? -- //www.freelists.org/webpage/oracle-l