On 2/14/24 15:20, Robert L Mathews via mailop wrote:
I find myself having a difference of opinion with Spamhaus about a
certain type of RBL listing, and I'm wondering what others think.
The situation is that the Reply-To email address of a public library's
"your book is due in five days" reminder system is listed in the
Spamhaus HBL
<https://docs.spamhaus.com/datasets/docs/source/10-data-type-documentation/datasets/030-datasets.html#hbl>, which Spamhaus says is because messages involving that address are hitting spamtraps.
(That sounds plausible: Maybe some library users don't update their
email addresses, then the library unwisely doesn't remove bouncing
messages to discontinued domain names, and the addresses eventually get
repurposed as spamtraps.
If the message is "your book is due in five days", it doesn't seem
reasonable that legitimate addresses are going to belong to discontinued
domains repurposed as spamtraps within that time period. Certainly not a
lot of them.
Perhaps the library's mail system has been compromised and either is or
was actually sending spam.
Does the library use confirmed opt-in or otherwise verify the email
addresses of its patrons? Maybe the patrons are putting in bogus
addresses. When asked for an email address by someone that I never want
to hear from, I've been known to enter "[email protected]". This
shouldn't wind up as a spamtrap, however.
How do they process bounces?
--
Jay Hennigan - [email protected]
Network Engineering - CCIE #7880
503 897-8550 - WB6RDV
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