Normally, I setup iPrint printers so that an external user can access the
internal printer. Now we have a need to have internal users print to
customer printers not on our network. To simulate, I have put a printer
outside our firewall and opened ports 631, 443 for SSL, (and even 9100)
for outgoing "web-common" access. After much massaging, I can get the
printer created on our internal server and show ready, printing, etc. when
jobs are sent to it, but it won't print the jobs. What have I missed?