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postfix: Use strict encryption for SMTPS, Submission

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The SMTPS (465) And Submission (587) ports expect encryption, either
implicitly (i.e. via direct TLS connection) or explicitly (i.e. via
STARTTLS), but this was not enforced previously. Port 25 remains
configured for opportunistic encryption, but will still not allow for
authentication over unencrypted transports.
This commit is contained in:
Alex Palaistras 2021-09-19 13:30:06 +01:00
parent 16ddc3ab79
commit c730ec37f0
1 changed files with 2 additions and 2 deletions
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4
config/service/postfix/container/config/master.cf
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@ -6,8 +6,8 @@
# (yes) (yes) (no) (never) (100)
# ==========================================================================
smtp inet n - n - - smtpd
smtps inet n - n - - smtpd
submission inet n - n - - smtpd
smtps inet n - n - - smtpd -o smtpd_tls_wrappermode=yes
submission inet n - n - - smtpd -o smtpd_tls_security_level=encrypt
pickup unix n - n 60 1 pickup
cleanup unix n - n - 0 cleanup
qmgr unix n - n 300 1 qmgr