EDIT your .cshrc or .alias file

In case your message server is coming up and then disappear you need to edit some lines into you .cshrc or .alias files in your home directories. I prefer to edit the .alias file, but that depend on how you have setup your things.
emacs .alias &

Copy the line below and paste then to the end of your file.
setenv HOST `uname -n | tr '[a-z]' '[A-Z]' | awk -F. '{print $1}'`
setenv AIPS_ROOT /data/ceardach/AIPS
set xxx = `grep "^[-+]  $HOST" $AIPS_ROOT/HOSTS.LIST`
if ( "$xxx" != "" ) then
unset xxx