Linux Printer Sharing With Mac OS X 10.5, Leopard
After upgrading to Apple’s Mac OS X 10.5, I found that my printers no longer existed. So I went to http://localhost:631 and tried adding my Gentoo CUPS printer share like I did before, but it refused to show up in the printers list. 
After some searching on the net, it seems that Apple has somewhat broken the way that it deals with Linux CUPS shares. Apparently it only searches for printers via Bounjour. In any case, I found a fix that works perfectly. Alessandro Dellavedova posted a fix for the problem over on the Apple support forums. Below is a slightly more detailed version of what he did.
WARNING: You will need administrator privileges to proceed with this fix.
- Open System Preferences.
- Open Print & Fax.
- Right-click in the printer’s pane and select “Reset printing system…”
- Open Terminal and type the following:
sudo nano /etc/cups/cupsd.conf
- Modify the first few lines such that they look similar to the following:
Browsing On
BrowseOrder allow,deny
BrowseAllow all
BrowseProtocols all
BrowseRemoteProtocols all
BrowsePoll <Your CUPS Server domain or IP>:631
BrowsePort 631 - Save the file
- Restart the printing subsystem by typing in the following:
sudo killall -HUP cupsd
Now you should be able to see and add the printers on your Linux share.