[cups] CUPS server not working

[Dave Edwards]

I spent a long time setting up my Lexmark z2300 printer to work on my linux
machine, but finally got it working today.
However I can't get it to work from other machines on my network.

On a remote machine I can add a new printer, it sees the z2300 on my linux
box, it installs it and everything looks fine until I try to print.
Then I get 'Communications Not Available' message
'The printer cannot communicate with the computer'

I checked firewall and the lexmark is in there enabled...

When I look at the linux 'printers' dialogue and I click 'Server' then
'settings'

I get 'There was an HTTP error: not found'

Can anyone advise?