The vacation autoresponder suite came with rhel3
and 4, but it's omitted from 5. My el5 box uses
sendmail-8.13.8-8.el5, which is what yum gives you,
and I don't want to switch to another mailhandler.
I grabbed the binary for vacation 1.2.7 from an
rhel4 box and it runs with no apparent error on
stat is a system call to get properties of a file (man 2 stat). I'd
guess that the stat failing means that either sendmail doesn't have
sufficient permissions on the vacation binary, or it isn't given the
full path to the binary and it isn't on whatever default path is setup
in sendmail and thus
