[imp] Connection timeout while connect to another server

[Hinojosa Couturier Rufino]

When I use the "PHP IMAP Support Test" and try to connect to another server using "imap/notls" or "imap" protocol I receive the message:

server="10.0.0.10" user="rhinojosa" mailbox="{10.0.0.10:143/imap/notls}INBOX"
array(1) {
  [0]=>
  string(59) "Connection failed to 10.0.0.10,143: Connection timed out"
}


Somebody knows why???