On 13 Nov 2020, at 9:31, Tonya Gordon via mailop wrote:
Good morning! Does anyone have any insight into the following question
we received from a customer?
“If we're using a wildcard SSL cert across multiple
sending/bounce/tracking domain configurations, will ISPs then
associate those configs together and thereby begin to cross-pollinate
their email reputations similar to how they would if, say, we shared a
single bounce domain across multiple sending domains?”
As others have noted, this isn't done now.
It is also unlikely to be done because SMTP senders rarely use whatever
certificates they have, as SMTP servers generally do not request them.
Encryption is bootstrapped with the server's certificate, so all a
client certificate is only good for is authentication, which doesn't
make sense for a bulk sender.
--
Bill Cole
b...@scconsult.com or billc...@apache.org
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
Not Currently Available For Hire
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