When the Maven deploy process was first created, problems with the scp wagon led to choosing to scpexe wagon instead. This uses an external tools for scp/ssh, and it is problematic due to the differences between various platforms.
The scp wagon uses JSch .
Switching to scp should make the deployment easier, and consists of the following tasks:
o update the deployment URL in pom.xml
o document required settings in settings.xml
o update README.txt
o update the wiki 
Using scp should be tested on Windows, Linux, Solaris, and Mac OS X before being committed.