We just encountered the same problem – multiple commands sent to processes returning this error:
Unable to contact process ‘xyz’ on port 12345.
This was on two different physical servers.
Also impacted an TCL smtp email function, showing this error:
error reading “sock49”: connection timed out
DNS administrator found an entry for localhost – removed it and flushed the cache, and a few minutes later, all was well.
Peter Heggie
PeterHeggie@crouse.org