RHCL (RoboHtml 9.0.1.262) -p doesnt work when invoked remotely

I am able to successfully build a project from the command line. I want to also publish the HTML output to a website.

When logged onto the build PC, I go to the folder where my RH project resides and I enter a command like this:

"C:\Program Files (x86)\Adobe\Adobe RoboHelp 9\RoboHTML\RHCL.exe" "MyProject.xpj" -p "MyServer:MyLogin:MyPassword" -g rh.log

The above command appears to work perfectly. Now, I have a CI (Jenkins) that I need to be able to invoke the above command from as part of a bigger build process. The EXACT same command above, when invoked from the CI (on a different PC) does not work. The help compiles just fine; no problems there. The problem is the publishing to the website, that fails. When reviewing the log I see the following at the end of the log:

Finished applying Template in 1 sec(s)

Finished applying WebHelp in 16 sec(s)

Compilation complete.

Warning: Failed to publish to "MyServer". reason; The login request was denied.

Tests Done:

- Copy/paste the command from Jenkins to the local command prompt and everything works perfectly.

- place the 3 parameters (site, login, password) within quotes, and without quotes = same result

Anybody have any ideas? Thanks in advance!