You don't put anything in the path, doing so means an automatic failure.
The machine works in the order you put the info. It is not redundant, and you only have an IP and a share, the path would be beyond the share (sub folders). What you are doing is telling it to go to the IP, then the folder, then the Hostname, then the folder again, so it fails
This is all you need to have
And this isn't an old printer, it doesn't do old NETBIOS over TCP/IP or old SMB1, username formatting is critical. It doesn't matter how you get there from Windows, it doesn't matter how your old printers do it, confirm the username in the permissions (if the user isn't there, add it, don't rely on Everyone , it doesn't always work and defeats the purpose of verifying the formatting.)
And don't forget the Security tab
If it still doesn't work you will need to verify the time is within 3 minutes (A requirement if the MFP is on HTTPs)
Gateway is correct, and firmware is up to date.
i have some trouble to got fax to smb to work.
Shared Folder: Faxeingang$ ...tested via CMD und Explorer....works fine
Now the Settings:
Serveradress: 10.xx.xx.2 Port 445
Path: ???? i tried \\SERVERNAME\Faxeingang | \\SERVERNAME\INTERN\Verwaltung\Faxeingang | \\10.xx.xx.2\Faxeingang
and then the authenfication: username\domain | username only
cant get it to work.
i hope anyone can help me to fill in the correct items