ubuntu - Postfix SSL 不工作，邮件变成垃圾邮件

Question

我正在尝试使用 SSL 配置 postfix。我已经按照本教程进行操作: https://www.cloudjojo.com/how-to-install-mail-server-on-ubuntu-14-04-part2/

我的主.cf:

# See /usr/share/postfix/main.cf.dist for a commented, more complete version


# Debian specific:  Specifying a file name will cause the first
# line of that file to be used as the name.  The Debian default
# is /etc/mailname.
#myorigin = /etc/mailname

smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
biff = no

# appending .domain is the MUA's job.
append_dot_mydomain = no

# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h

readme_directory = no

# TLS parameters

smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache

# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
# information on enabling SSL in the smtp client.

smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
myhostname = street-sport-base
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
# myorigin = /etc/mailname

relayhost = 
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
inet_protocols = all


queue_directory = /var/spool/postfix
mail_owner = postfix

mydomain = street-sport.pl
myorigin = street-sport.pl

mydestination = $myhostname,  street-sport-base, localhost.$mydomain, localhost




home_mailbox = Maildir/ 
sendmail_path = /usr/sbin/sendmail 
newaliases_path = /usr/sbin/newaliases 
mailq_path = /usr/sbin/mailq 
setgid_group = postdrop 
html_directory = no 
manpage_directory = /usr/share/man 
sample_directory = /etc/postfix 

biff = no 

virtual_mailbox_domains = mysql:/etc/postfix/mysql-virtual-mailbox-domains.cf 
virtual_mailbox_maps = mysql:/etc/postfix/mysql-virtual-mailbox-maps.cf 
virtual_alias_maps = mysql:/etc/postfix/mysql-virtual-alias-maps.cf,mysql:/etc/postfix/mysql-virtual-email2email.cf 

smtpd_tls_key_file=/usr/local/nginx/ssl/1710371.key
smtpd_tls_cert_file=/usr/local/nginx/ssl/1710371.cert
smtpd_tls_CAfile=/etc/ssl/certs/certificate_and_key.crt
smtpd_use_tls=yes 
smtpd_tls_auth_only = no 

smtpd_sasl_type = dovecot 
smtpd_sasl_path = private/auth 
smtpd_sasl_auth_enable = yes 

smtpd_recipient_restrictions = 
   permit_sasl_authenticated,
   permit_mynetworks, 
   reject_unauth_destination 

virtual_transport = lmtp:unix:private/dovecot-lmtp

smtpd_tls_security_level = may
smtp_tls_security_level = may

smtp_tls_key_file=/usr/local/nginx/ssl/1710371.key
smtp_tls_cert_file=/usr/local/nginx/ssl/1710371.cert
smtp_tls_CAfile=/etc/ssl/certs/certificate_and_key.crt


smtp_use_tls = yes
smtpd_tls_received_header = yes
smtpd_tls_ask_ccert = yes
smtpd_tls_loglevel = 1
tls_random_source = dev:/dev/urandom

大师.cf

submission inet n       -       y       -       -       smtpd
  -o syslog_name=postfix/submission
  -o smtpd_tls_security_level=encrypt
  -o smtpd_sasl_auth_enable=yes
#  -o smtpd_reject_unlisted_recipient=no
  -o smtpd_client_restrictions=permit_sasl_authenticated,reject
#  -o smtpd_helo_restrictions=$mua_helo_restrictions
#  -o smtpd_sender_restrictions=$mua_sender_restrictions
#  -o smtpd_recipient_restrictions=
#  -o smtpd_relay_restrictions=permit_sasl_authenticated,reject
  -o milter_macro_daemon_name=ORIGINATING
smtps     inet  n       -       y       -       -       smtpd
  -o syslog_name=postfix/smtps
  -o smtpd_tls_wrappermode=yes
  -o smtpd_sasl_auth_enable=yes
#  -o smtpd_reject_unlisted_recipient=no
  -o smtpd_client_restrictions=permit_sasl_authenticated,reject
#  -o smtpd_helo_restrictions=$mua_helo_restrictions
#  -o smtpd_sender_restrictions=$mua_sender_restrictions
#  -o smtpd_recipient_restrictions=
#  -o smtpd_relay_restrictions=permit_sasl_authenticated,reject
  -o milter_macro_daemon_name=ORIGINATING

当我将消息从控制台发送到我的 gmail 邮箱时，消息已送达，但已进入垃圾邮件。 Gmail 表示此邮件具有标准的 tsl 加密(灰锁)。我究竟做错了什么？我需要完全加密，确保电子邮件不会变成垃圾邮件。

文件 1710371.key 只包含 key 文件 1710371.cert 包含我的域的证书文件 certificate_and_key.crt 包含我的域的证书、 key 和两个中间证书:1. http://repository.certum.pl/hsha2.pem2. http://repository.certum.pl/gscasha2.pem

Answer 1

如果您想使用比“标准 TLS 加密”更好的东西，您需要使用 S/MIME 形式的端到端加密。端到端意味着从邮件发件人到收件人，这意味着这只能通过您的邮件客户端进行，而不能通过您的邮件服务器进行，​​这只是一个跃点，而不是邮件传输的端点。

参见 Google Help了解各种符号的含义以及您需要做什么才能拥有 S/MIME。

I need full encrytion that emails doesn't go to spam.

只有一小部分邮件使用 S/MIME。应该可以使用标准的 TLS 加密或根本不加密而不被归类为垃圾邮件。更有可能的是你的服务器在一些早期发送垃圾邮件的黑名单上，你正试图从一个普通的私有(private)系统(即 DSL、电缆或类似的而不是互联网上的真实服务器)发送邮件，其他东西被弄乱了根据您的设置或只是根据内容将您尝试发送的邮件视为垃圾邮件。