Ignoring unqualified MX's ?

Simon Waters Simon at wretched.demon.co.uk
Wed Mar 22 10:11:18 UTC 2000

>torben fjerdingstad <unitfj-bind at tfj.rnd.uni-c.dk> wrote in message
news:20000322100845.B22095 at tfj.rnd.uni-c.dk...
>I think I have pointed out a security problem in bind.
>Am I wrong.

Yes, I think your wrong.

BIND is behaving perfectly correctly.
You might genuinely want a RR record to point to localhost.

Historically mail transport agents have taken it upon themselves to identify
mail loops.

Certainly a trivial one like delivery to localhost should not frighten the
horses, perhaps some one will try it with sendmail.

Of course if you could figure out a more complex loop using a similar

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