On 9/27/20 12:29 PM, Dave Crocker wrote:
On 9/27/20 11:04 AM, John R Levine wrote:
Anything that comes from a dynamic or NAT pool is invariably spam
from a botnet.
No, because nobody is looking that closely. It's basically just
prejudice that assumes that "legitimate" senders have static IP
addresses, delegation of the corresponding zone in in-addr.arpa, and
the knowledge to populate the PTR records.
John L. has been correctly summarizing what members of M3AAWG have
been quite consistent about, for many years. It is part of the reason
that running a legitimate mail server on the open Internet, these
days, requires a significant amount of knowledge about the rather
elaborate set of expected configuration and procedure.
I find that very prejudiced notion of "legitimate" offensive.
"legitimate" is legitimate content, nothing more or less.
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