PostFix error

[whizkid at ValueDJ.com]

For some reason I get these errors on occasion.  Mail is flowing, but I
want to make sure this error goes away...

Oct 28 03:01:00 ns1 postfix/sendmail[1523]: fatal: unsupported: -bh
Oct 28 03:01:01 ns1 postfix/sendmail[1524]: fatal: unsupported: -bH

Currently I am running FreeBSD 5.1, Postfix, Courier-Imap, SquirrelMail 1.4.2

They have all been install from the Ports, upgraded with PortUprage and
CVSup.

rc.conf has:

sendmail_enable="NONE"