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drop SSLv3, RC4 ciphers from SMTP port 25

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Per http://googleappsupdates.blogspot.ro/2016/05/disabling-support-for-sslv3-and-rc4-for.html, Google is about to do the same.

fixes #611
This commit is contained in:
Joshua Tauberer
2016-06-12 09:11:50 -04:00
parent fac8477ba1
commit 3055f9a79c
4 changed files with 45 additions and 72 deletions
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setup/mail-postfix.sh
+2 -1
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@@ -122,8 +122,9 @@ tools/editconf.py /etc/postfix/main.cf \
smtpd_tls_cert_file=$STORAGE_ROOT/ssl/ssl_certificate.pem \
smtpd_tls_key_file=$STORAGE_ROOT/ssl/ssl_private_key.pem \
smtpd_tls_dh1024_param_file=$STORAGE_ROOT/ssl/dh2048.pem \
smtpd_tls_protocols=\!SSLv2,\!SSLv3 \
smtpd_tls_ciphers=medium \
smtpd_tls_exclude_ciphers=aNULL \
smtpd_tls_exclude_ciphers=aNULL,RC4 \
smtpd_tls_received_header=yes
# Prevent non-authenticated users from sending mail that requires being