On 9/5/22 13:51, Atro Tossavainen via mailop wrote:
Yes, Sender Address Verification is abusive as well because it causes
the systems doing it to woodpecker on anybody whose addresses are forged
as senders in spam.
And so is Challenge/Response based spam filtering.
Agreed, but so is recipient address verification for the same reason.
b) website registration process - some time ago I was maintaining some
website where people often mistyped their email addresses. Due to the
nature of the website the typical "click on confirmation link that
arrives via email" approach could not be used
List members will probably argue eloquently for why "could" is the
wrong word to use here. I don't mean there is anything wrong with
your grammar, your language is perfectly fine.
Much like passwords, many web forms have the user enter the email
address twice to catch typos. Note that spammy sites often label this
second text box "Confirm Email Address" and claim that this constitutes
"Confirmed Opt-In". Not so. Abusers will happily fill out such forms
with the addresses of those they want to annoy with unwanted email, even
if they have to do so twice.
...potentially causing some users not to be able to fill in the form
at all if the receiving email system was aware of such attempts and
refused to serve them. ;)
If a person repeatedly can't type their own email address into a form,
then they won't be able to benefit from whatever that form is offering.
The same is true for phone numbers, postal addresses, etc. So-called
email address verification services aren't going to be able to correct
this.
Do you think using this method of email verification in such cases
is OK or not?
If it is, then it must be OK in all cases. This is, after all, the
intended use case for Radek's system as per his previous correspondence.
The elephant in the room is, who are the customers of ANY third-party
commercial email verification service? Casual mailers, businesses who
develop and maintain their own mailing lists, and legitimate ESPs get
bounce messages. They can and should be using these on a regular basis
to stop future mailings to those addresses that are not valid.
The only logical customer of such a service IMHO is someone who acquires
a list of email addresses with which they have had no previous
interaction and intends to mail that list in bulk. There is a word
describing such people. That word is "spammer".
--
Jay Hennigan - j...@west.net
Network Engineering - CCIE #7880
503 897-8550 - WB6RDV
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