I have workflow notification turned on and am receiving all notifications I
expect, but there is no "From:"
I have specified an address in the defaults, by running configupdate.sh, but
that doesn't seem to be working.

Are there smtp server specific behaviors that won't allow a "fake" address
to be inserted in the from field? My smtp server is set to allow the User
Application server to anonymously route mail through it without login.

Any ideas where I ought to look to fix this?