On Tue, Jan 06, 2026 at 12:03:32 +0100, A.Schulze via Postfix-users wrote:
> Viktor wrote [1] some days ago:
>
> > the best thing to do, as with most of the cryptographic
> > parameters, is to leave them at their default values.
>
> So, I like to ask if/when it makes sense to use
> 'smtp_tls_session_cache_database'
> Maybe the empty default can save me from some future trouble...
>
> Andreas
This is not actually a cryptographic parameter, merely an optional
performance optimisation to avoid repeated TLS key exchanges to
frequent SMTP destinations (as key exchange is the most expensive
part of TLS, the subsequent bulk encryption is relatively cheap).
Geert
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