On 10/28/2009 9:38 PM, Hill, Brett wrote:
> The point of listing and IP address in denySMTPConnectionsFromAlways is not
> to be nice. The only reason any IP address should be in there is because all
> it sends is spam. So, if you have listed an IP address in there that may or
> may not send spam, you should remove it. Another reason
> denySMTPConnectionsFromAlways was created was to save processing time and
> bandwidth.
>
Or, just because you want it to be there. No matter if they spam
you or not :-) Or if they spam you and send someone else legit mail...
>
>> In cases where this is a false positive, the unfortunate
>> senders will never know their mail did not reach the final
>> destination.
>>
> Yes, they will, eventually (unless they're not using a RFC compliant mail
> server). If you have listed an IP address in denySMTPConnectionsFromAlways
> and it turns out that the sending mail server's IP shouldn't be listed there,
> the original sender "will" receive a mail message at the end of the retry
> period that the sending mail server observes (which could be 24/48/72 or some
> other amount of hours). "DenySMTPConnectionsFromAlways" is not a list to be
> taken lightly. IMHO it shouldn't have to be ASSP's problem to have to reply
> with a rejection in this circumstance. That gets you back to the whole idea
> of wasting processing time and bandwidth.
>
> Kind Regards,
> Bret
Good point. The same applies to blocking IP's @ the
router/firewall, I'm not breaking any RFCs if I put an IP in my router's
firewall...
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