This problem bites me too. It seems to me that the intent is for sendmail-program to be set depending on what is installed on the user's system rather than on the builder's system, so perhaps this is an upstream problem. I will ask on the emacs-devel list.
Toby. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]