Alessandro Vesely wrote:
Jose-Marcio Martins da Cruz wrote:
AFAIK, there is no way SMTP can be configured so that a given sending
location can be whitelisted. One can try and detect what MTA sends the
message and whitelist specific filters, presumably doing detection by
the IP address of each mailout. That's much like VPN: being at a higher
level doesn't ease the task. For example, assume someone trusts Gmail's
egress filtering and wants to skip content filtering for mail coming
from there. What work is required to accomplish (and maintain) that
task, on typical MTA software?
Hmmmm.... You're raising a problem which is similar to the problem of management of user
preferences on a border smtp gateway. This isn't a problem at, say, gmail or mailbox
providers as most of the time users have only one email address.
But talking about universities, or look alike organisations...
Myself, I have many **non shared** identities : only to cite two, the one you can see in
this message and my login.
But also I have many **shared** identities. These identities correspond to email addresses
(administrative or not) which resolve to many people. I can hardly see some kind of
management of *shared consent* for these addresses.
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