Originally Posted by michaelvv
Linux webdev01 2.4.21-32.ELsmp #1 SMP Fri Apr 15 21:17:59 EDT 2005 i686 athlon i386 GNU/Linux
I'm running the Korn shell
Well, the uname -a will give you kernel and other info. Version/distro is like RedHat 5 or OpenSuSE 10.3, etc.
Based on your kernel, and the references to the mail program you're running, it's not surprising you're missing some options.
You can try to download/install a more modern mail program from source, but given what you say about your environment, that may not be easy. And exporting that environment variable...never seen that done before....