relay testing

[Bruno Wolff III]

Just to make sure I went and tried the relay test that MAPS' tester says
may be a problem. The message was accepted however the % imparted no
special meaning to how the local address was treated and a bounce message
was sent, since there was no local address with a % in it.

About the only problem with this, is that in these days of spammers, it
would be nice to have the message refused rather than generate a bounce
message locally and end up with double bounces for a lot of spam.