I would like to use the Rechtman font by David Rakowski for a logo. But I can't see anywhere if it's free or how to contact him.

I have the original text file that came with Rechtman. It's not free, it's shareware, although the terms are pretty relaxed,
to say the least (not to mention original).

The font is nearly 30 years old. I doubt the contact info in the readme is any good. If I remember correctly, he's long
out of the font business. I don't know what else to tell you.

Text of that readme file can be found here:
http://www.fontyo.com/view_file/1634/UkVDSFRNQU4uVFhU/rechtman.txt