As of bug #191997 my up-to-date FC5 printer server does not accept IPP jobs from RHEL3 server. I seems to be fixed by latest update (cups-1.2.1-1.2) but does not. There is no firewall and no change in the configuration since whole system worked fine, only FC5 has been auto-updated. I'm opening new bug as above bug has been about sending IPP jobs to external printer. In my case the cups server should receive IPP jobs from external IPP client (RHEL3 machine).
Could you please capture the IPP traffic using tcpdump or ethereal, and attach the pcap file here? (If you need help doing that, please let me know..) Thanks.
Never mind. It was DNS problem. Sorry... sorry...