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feature: improve security on postfix

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FranMercedesG
2024-09-18 15:00:55 -04:00
parent 69b966a030
commit 1bb108c62c
1 changed files with 6 additions and 4 deletions
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10
modoboa_installer/scripts/files/postfix/main.cf.tpl
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@@ -48,11 +48,13 @@ smtpd_tls_security_level = may
smtpd_tls_received_header = yes
# Disallow SSLv2 and SSLv3, only accept secure ciphers
smtpd_tls_protocols = !SSLv2, !SSLv3
smtpd_tls_mandatory_protocols = !SSLv2, !SSLv3
smtpd_tls_protocols = !SSLv2, !SSLv3, !TLSv1, !TLSv1.1
smtpd_tls_mandatory_protocols = !SSLv2, !SSLv3, !TLSv1, !TLSv1.1
smtpd_tls_mandatory_ciphers = high
smtpd_tls_mandatory_exclude_ciphers = aNULL, MD5 , DES, ADH, RC4, PSD, SRP, 3DES, eNULL
smtpd_tls_exclude_ciphers = aNULL, MD5 , DES, ADH, RC4, PSD, SRP, 3DES, eNULL
smtpd_tls_mandatory_exclude_ciphers = aNULL, eNULL, EXPORT, DES, RC4, MD5, PSK, aECDH, EDH-DSS-DES-CBC3-SHA, EDH-RSA-DES-CBC3-SHA, KRB5-DES, CBC3-SHA, CAMELLIA, SEED-SHA, AES256-SHA, AES256-SHA256, AES256-GCM-SHA384, AES128-SHA, AES128-SHA256, AES128-GCM-SHA256, DHE-RSA-AES128-GCM-SHA256, DHE-RSA-AES128-SHA, DHE-RSA-AES128-SHA256, DHE-RSA-AES256-GCM-SHA384, DHE-RSA-AES256-SHA, DHE-RSA-AES256-SHA256, DHE-RSA-CHACHA20-POLY1305, ECDHE-RSA-AES128-SHA, ECDHE-RSA-AES256-SHA
smtpd_tls_exclude_ciphers = aNULL, eNULL, EXPORT, DES, RC4, MD5, PSK, aECDH, EDH-DSS-DES-CBC3-SHA, EDH-RSA-DES-CBC3-SHA, KRB5-DES, CBC3-SHA, CAMELLIA, SEED-SHA, AES256-SHA, AES256-SHA256, AES256-GCM-SHA384, AES128-SHA, AES128-SHA256, AES128-GCM-SHA256, DHE-RSA-AES128-GCM-SHA256, DHE-RSA-AES128-SHA, DHE-RSA-AES128-SHA256, DHE-RSA-AES256-GCM-SHA384, DHE-RSA-AES256-SHA, DHE-RSA-AES256-SHA256, DHE-RSA-CHACHA20-POLY1305, ECDHE-RSA-AES128-SHA, ECDHE-RSA-AES256-SHA
tls_preempt_cipherlist = yes
tls_ssl_options = NO_COMPRESSION
# Enable elliptic curve cryptography
smtpd_tls_eecdh_grade = strong