[CentOS] sendmail aliases

     Actually it *IS* a source change.  The `confAUTO_REBUILD' option has been
deleted from the sendmail source files for some time now.  One can put that
option in the sendmail.mc configuration file, but it will not be used because
it isn't in the source any more.  I've double checked this and have looked at
the source.  Now, I suppose if one isn't using a current version of sendmail,
then this option may still be in the version you are using.