2016年3月10日時点で、
sudo vi /etc/postfix/main.cf を実行して、下記の数行を追加して、
sudo /etc/init.d/postfix restart で再起動すれば、OKです。
sudo vi /etc/postfix/main.cf を実行して、下記の数行を追加して、
#20160310 時点
smtpd_tls_eecdh_grade = strong
tls_preempt_cipherlist = yes
smtpd_tls_loglevel = 1
smtp_tls_loglevel = 1
smtpd_use_tls = yes
smtp_use_tls = yes
smtpd_tls_security_level = may
lmtp_tls_mandatory_ciphers = high
smtp_tls_mandatory_ciphers = high
smtpd_tls_mandatory_ciphers = high
smtp_tls_security_level = may
smtpd_tls_mandatory_exclude_ciphers = MD5, DES, ADH, RC4, PSD, SRP, 3DES, AECDH, eNULL
smtpd_tls_exclude_ciphers = MD5, DES, ADH, RC4, PSD, SRP, 3DES, AECDH, eNULL
smtp_tls_mandatory_exclude_ciphers = MD5, DES, ADH, RC4, PSD, SRP, 3DES, AECDH, eNULL
smtpd_tls_mandatory_protocols = !SSLv2, !SSLv3
smtpd_tls_protocols = !SSLv2, !SSLv3
smtp_tls_mandatory_protocols = !SSLv2, !SSLv3
smtp_tls_protocols = !SSLv2, !SSLv3
sudo /etc/init.d/postfix restart で再起動すれば、OKです。
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