"No technique is a complete solution to the spam problem, and each has
trade-offs between incorrectly rejecting legitimate email (false
positives) vs. not rejecting all spam (false negatives) – and the
associated costs in time and effort."
Quote from Wikipedia page on antispam:
https://en.wikipedia.org/wiki/Anti-spam_techniques
It has happened before that PDML subscribers found themselves using
email providers whose domain or IP-range is considered to be a spam
source. Sometimes the ISP is sloppy and allow spam servers to operate,
but in most cases it's hapless users with poor antivirus protection that
gets infected with malware that distribute spam. If a sufficient number
of users with one ISP are afflicted, some spam filter may block all mail
from that IP range. Most modern ISPs have spam filters on outgoing email
as well, but it is harder to monitor properly than incoming email.
Jostein
Den 16.08.2017 11:06, skrev Alan C:
Most PDML e-mails haven't been coming through & I have to access them
through the archives instead . Now they are belatedly coming through in
dribs-and-drabs. Perhaps there is a leak in the Atlantic undersea cable?
Alan C
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