The aarnet.dl.sourceforge.net server appears to no longer exist. But because your DNS servers are not standards-compliant, they tell MacPorts that the host does exist, causing MacPorts to download an HTML file from it, rather than the file we wanted, thus causing a checksum mismatch to occur.
You are correct that the "mappingresources4pdf" files don't seem to exist on any of the servers. But you are using a very outdated port. The log shows you are using ghostscript 9.10, but the port was updated to version 9.16 in r136284 back in May 2015, which included an update to these "mappingresources4pdf" files to fetch them from elsewhere. Please run "sudo port selfupdate" to receive this and many other updates.
We want the port name in the port field. Could you please let me know where in the documentation this is unclear, so I can clarify it?
