postgresql dblink_connect timeout - postgresql

Question

I am trying to use dblink to move data from one system to another. Both machines are RHEL 5.11, both running postgresql 9.2, both on the corp internal net with no firewall rules between them. I am working from my desktop vpn'ed into the corp internal net.
Call the two machines FROM and TO. The FROM machine has dblink installed as an extension, the TO machine does not. For both machines the user I am specifying has a pg_hba.conf host entry listing all for db's, 0.0.0.0/0 for address, and trust.
Using pgadmin3, I can connect to both machines from my desktop, see/add/modify databases on both. I think this rules out both trivial connection issues and permissions as potential sources of the problem.
in a pgadmin query window for the FROM machine, I execute this:
SELECT dblink_connect('AAA','host=TO dbname=XXX user=postgres password=ZZZ');
-OR-
SELECT dblink_connect('host=TO dbname=XXX user=postgres password=ZZZ');
-OR-
Either variety above entered at a psql command line on the FROM machine.
Results in this message delivered in the messages-pane or to the command line:
----- ERROR: could not establish connection DETAIL: could not connect to server: Connection timed out Is the server running on host
"TO" (AAA.BBB.CCC.DDD) and accepting TCP/IP connections on port 5432?
********** Error **********
ERROR: could not establish connection SQL state: 08001
Detail: could not connect to server: Connection timed out Is the
server running on host "TO" (AAA.BBB.CCC.DDD) and accepting TCP/IP
connections on port 5432?
Suggestions?
Update
-- tried replacing hostname "TO" with "localhost", same result.
-- however, dblink_connect('dbname_on_FROM'); works. so basic dblink functionality IS functionaing.
-- original problem remains unsolved as I want to ship data to a server on TO machine.

Answer 1

I am not sure if you were able to figure out the problem or not, but I am going to answer anyway. The "TO" machine's database might be running on a port different than 5432. You need to make sure the port your DB Server is running on and the port you specified in the "FROM" machine are the same.
If the port number is same, then there has to be a mistake in host, username or password when specifying these parameters in the "FROM" machine.