Am 21.12.25 um 19:38 schrieb John Fawcett via Postfix-users:
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.
exact
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.
well, the default changed:
# mta1
# the defaults...
# postconf -d compatibility_level mail_version lmtp_tls_security_level
compatibility_level = 0
mail_version = 3.10.7
lmtp_tls_security_level =
# my active setting
# postconf compatibility_level mail_version lmtp_tls_security_level
compatibility_level = 3.8
mail_version = 3.10.7
lmtp_tls_security_level =
# mta2, an updated lab instance
# the defaults...
# postconf -d compatibility_level mail_version lmtp_tls_security_level
compatibility_level = 0
mail_version = 3.11-20251219
lmtp_tls_security_level = ${{$compatibility_level} <level {3.11} ? {} : {may}}
# my active setting
# postconf compatibility_level mail_version lmtp_tls_security_level
compatibility_level = 3.11
mail_version = 3.11-20251219
lmtp_tls_security_level = none
Oh, and as usual, Wietse has documented that:
https://www.postfix.org/COMPATIBILITY_README.html#xxx_tls_level
Andreas
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