NethServer Version: NethServer release 7.3.1611 in VMware 12 VM Bridged NIC
Module: nethserver-printers, MariaDB (MySQL) server, Nextcloud, PhpMyAdmin, shellinabox
NOOB here. All modules listed are functioning correctly EXCEPT the Print Server module when attempting to access it from Nethserver menu. Hovering over Nethserver Printer menu shows "http://192.168.0.149:980/en-US/Printers". Using Opera 47, Chrome 61.0.3163.79 or Safari 5.1.7 on Windows 10 Pro fails to open cups and the page error is "lhost.ldomain.test refused to connect." Accessing cups directly from any browser using "lhost.ldomain.test:631" also fails.
Accessing cups directly from any browser using "http://192.168.0.149:631" connects to cups. I can authenticate, add printer, print test page, etc. Printer is listed under dashboard menu as enabled and idle. Printing a test page from cups results in "Filter Error". Used a bogus file for PPD (since I cannot seem to find one for an Epson Artisan 837) just to get the printer added. I have a couple of HP inkjet printers I will try.
I have obtained the same results using Nethserver 6.9 and 7.3 with similar applications installed. I have looked for clues in the cups and httpd logs to no avail.
I am looking for coaching/clues/hints to enhance my own troubleshooting skills.
Update Forgot to mention:
NetBIOS domain name: LDOMAIN
LDAP server: 192.168.0.159
LDAP server name: nsdc-lhost.ad.ldomain.test
Bind Path: dc=AD,dc=LDOMAIN,dc=TEST
LDAP port: 389
Server time: Tue, 19 Sep 2017 01:10:41 CDT
KDC server: 192.168.0.159
Server time offset: 0
Last machine account password change: Fri, 15 Sep 2017 11:39:11 CDT
Join is OK