You've most probably just misconfigured something in the pg_hba.conf file because of the error message you're getting. Happened to me more than once.
If you allow it, paste the contents of your pg_hba.conf here and surely someone (hopefully one would be me) in the list could point out what's wrong.
---
Mel
System: sparc-sun-solaris2.6
PostGreSQL build: 7.3.3
Problem: remote access through firewall
We installed PostGreSQL on a Solaris machine; we need to access the db remotely, via JDBC or through pgAdmin; we have edited the pg_hba.conf file to (theoretically) allow access to a test db from a developer's PC--but all access attempts (via JDBC or pgAdmin) are rejected with this error message:
A connection error has occurred: FATAL: No pg_hba.conf entry for host <IP>, user postgres, database testdb
The IP address returned in the error message is for our firewall;
PostGreSQL is configured to receive tcp/ip requests ( tcpip_socket = true in the postgresql.conf, and postmaster is started with the -i option); our sysadmin says that port 5432 is open (as is presumably indicated by the refused connection attempt);
We can connect to the db via JDBC--when the Java program is run on the same machine as PostGreSQL;
--
David Rickard
Software Engineer
The GTS Companies
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