On Dec 5, 2006, at 12:57, Wilfried Mestdagh wrote:
>
>>> Also I assume the SMTP server's 451 is not correct in this situation.
>> No. 451 indicates that it is a transient error, not a permanent one.
>> This means you may try again later.
>
> So this means since they use a wrong error number they will get more
> spam because the server will do a range of retries ? It should be a 5xx
> which is permanent then it will go back to the sender without retry.
Technically, a spam blockage is a transient error, since the rules may
be re-evaluated and delivery permitted at a future time. This is why
it does not return 5xx. This is by design.
dZ.
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