postfix is chroot'ed, but the jail is missing /etc/services, so smtp dies trying to bind port 25. this can be fixed by cp /etc/services /var/spool/postfix/etc
This was fixed in 1.1.3-3; 1.1.4-1 is current.
I can't check 1.1.4-1, but 1.1.3-4 (which is what shipped in beta2) is still broken....
Now that it's available in rawhide, I tried 1.1.4-1. It's still broken. If 1.1.3-3 fixed it, then there was regression between 1.1.3-3 and 1.1.3-4, since it and everything later are broken.
Re-fixed in 1.1.4-3