If you cannot contact a particular system, you can check communications to that system with Uutry and uucp.
For more information, see Using Your Assigned Administrative Rights in Securing Users and Processes in Oracle Solaris 11.4.
# /usr/lib/uucp/Uutry -r system
Replace system with the host name of the system you are unable to contact. This command does the following:
Starts the transfer daemon (uucico) with debugging. You can get more debugging information if you are root.
Directs the debugging output to /tmp/system.
Prints the debugging output to your terminal by issuing the following command:
# tail -f
Press Control-C to end output. You can copy the output from /tmp/system if you want to save the output.
# uucp -r file system\!/dir/file
file – is the name of the file that you want to transfer
system – is the name of the system that you want to copy to
/dir/file – is the location of the file on the other system
If you still cannot solve the problem, you might need to call your local support representative. Save the debugging output, which can help diagnose the problem.
Debug level 3 provides basic information about when and how the connection is established, but not much information about the transmission. Debug level 9, however, provides exhaustive information about the transmission process. Be aware that debugging occurs at both ends of the transmission. If you intend to use a level higher than 5 on a moderately large text, contact the other site's administrator and decide when to change the level.