I need to share some files on a remote trusting domain, a trust is in place and it can be verified and Port Query runs with no errors. When attaching to the files with unc path and ipaddress I get a logon failure, share is not accessible error. Remote domain says that there are no firewalls on their domain and they have lots of trusts in place.
To try and move the problem on I tested from a machine that is not part of our domain and it gets through to the share and gets presented with a logon box. The same test with a pc in our domain fails.
Thought I had the problem licked when I did some port monitoring, this indicated that connecting from the domain the only authentication was NTLM whereas connecting from a non domain pc I could see additional authentication. Using the net use V: \\server.domain.com\ from a non domain pc gets me in.
Connecting to the remote domain through Lan manager will suit my needs, but I think that some domain policy is blocking this. I tried to tweak the Lan manger authentication level on our domain to Send Lm and NTLM responses but no luck.