On Sat, 8 May 1999, Jeffrey Goldberg wrote:
> First there is a shocking number of hosts sending mail without proper
> reverse (PTR) lookups. So there are legitimate, but misconfigured,
> mailhubs for which you can't map from IP address to any domain name.
I just checked yesterday's logs on one hub and found that 729 messages
were from such hosts, although often just a few such hosts produced a
number of such messages.
Here is a sample log entry (broken for readability and slightly edited)
from a host that produced about 20 of these.
1999-05-07 00:16:03 10fXN4-0003tl-00 <=
Microsoft_011876@???
H=(cpitgmsgd10.NEWSWIRE.MICROSOFT.COM) [207.46.134.22]
P=esmtp S=4779
T="UK Local News- Announcing Microsoft 2000"
from <Microsoft_011876@???>
for [...]
Another big offender is lyris.com
-j
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