On 2024-03-13 at 14:30:40 UTC-0400 (Wed, 13 Mar 2024 20:30:40 +0200
(EET))
Harald Hannelius via mailop <[email protected]>
is rumored to have said:
Are there SMTP-"clients" that actually are able to back down from
STARTTLS and continue unencrypted?
I'm not aware of anyway to de-escalate after a STARTTLS on the same TCP
connection. The plaintext fallback behavior that I'm aware of in MTAs'
SMTP clients is by way of a fresh connection. Some have done so poorly
at times and I'm not sure how good fallback is across the class. I don't
think any MUA client knows how to fall back in any way.
--
Bill Cole
[email protected] or [email protected]
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
Not Currently Available For Hire
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