Arpanet FTP Server Reply Code

[utzoo!decvax!ucbvax!unix-wizards]

>From dcrocker at udel Wed Sep 30 14:40:11 1981
Some Arpanet Unix FTP servers issue a 451 code in reply to an
unknown address, rather than the much more common 450.  I have just
changed ours and thought the other such sites ought to check
theirs.

(Sorry to the rest of the wiz world for the overly broad distribution.)

dave