The relay is now running with the option
ExitRelay 1
which should trigger the default exit policy, if I didn't understand.
your exit policy is: reject 0.0.0.0/8:* reject 169.254.0.0/16:* reject 127.0.0.0/8:* reject 192.168.0.0/16:* reject 10.0.0.0/8:* reject 172.16.0.0/12:* reject 142.44.232.119:* accept *:*
which I assume is not what you want because it allows SMTP (tcp/25).
You might want to consider the reduced exit policy https://trac.torproject.org/projects/tor/wiki/doc/ReducedExitPolicy
you might also want to enable IPv6 exiting if you have IPv6 connectivity to make your exit more useful https://trac.torproject.org/projects/tor/wiki/TorRelayGuide#IPv6
The default front page, should also be displayed.
if you want to make it easy to see that HTML page, you might want to change your DirPort to 80 since people are unlikely to enter
into their URL bar