john larkin <jl@glen--canyon.com> wrote:
On Sat, 12 Sep 2026 11:20:56 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"john larkin" <jl@glen--canyon.com> wrote in message
news:mtpaalh6mup4r05gd8jq83d6ok6laaeg4s@4ax.com... >I sent some emails to
people regarding the equipment hazards that I > mentioned in the
"discharging caps" thread. Google refused to deliver > them. I must have
used forbidden words like "explode" or something.
>
There are many reasons why email may not deliver.
Had you emailed these people before?
Often.
What did the bounce message say?
mx.google.com gave this error:
This message was blocked because its content presents a potential
security issue. To review our message content and attachment content
guidelines, go to https://support.google.com.....
I haven't been able to contact anyone who uses gmail or google mail for
a couple of years now. Apparently they are demanding some
identification which my e-mailer doesn't give, so they just delete my
e-mail without explanation. I am not going to change my e-mailer to
suit them, expecially if it gives them information I have no control
over.
Google wants sending server to cryptographically sign the message.
Which means that if things go to the court and receiver presents
messages from you they are likely to be accepted as valid proof
that you sent them. As a byproduct message that they accept can
be traced to the machine that sent it.
This leaks some information, but given that there is a lot of spam
and scams I think that this strikes resonable balance between
protecting privacy of the sender and legitimate right of
receiver to know identity of the sender. Actually, it signature
only confirms sending machine, it is up to the sending machine if
it clearly discloses your identity or uses some form ot cryptic
id. For example sending machine may offer you "one-time" accounts
used only for single e-mail exchange. Given a warrant law
enforcement is expected to establish your real identity from
this data but otherwise is leaks far less information than say
visiting a web site would do.
--
Waldek Hebisch
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