On 21/12/2025 18:10, A.Schulze via Postfix-users wrote:
Hello,
today, I updated an MTA from 3.10.7 to 3.11-20251219
Now, I see this warning:
Dec 21 17:51:33 mta postfix/lmtp[760]: warning: smtp_connect_local:
opportunistic TLS encryption is not appropriate for unix-domain
destinations.
The server uses "relay_transport =
lmtp:unix:/path/to/dovecot/lmtp-server"
I added "lmtp_tls_security_level = none" and the warning no longer
appear.
Is that the expected configuration to avoid that warning?
Andreas
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Hi Andreas
setting lmtp_tls_security_level to "may" produces that warning and then
sets the lmtp_tls_secuirty_level to "none" in any case, so configuring a
value of "none" is doing just the same but without the warning. I guess
that you actually don't need it set at all, you can just leave it out
and use the default of empty. I have a similar lmtp setup and have not
set this variable.
John
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