Ssl
不發送加密消息
我的郵件伺服器似乎沒有發送加密郵件。
似乎大多數資訊/教程都集中在設置 TLS 以便客戶端可以連接，我相信我已經實現了。我了解到，在配置文件中，SMTPD 主要用於接收郵件。我相信我缺少一些 SMTP 參數，嘗試了一些，但沒有運氣。
這是來自我的 postconf - n：
alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases append_dot_mydomain = no biff = no inet_interfaces = all inet_protocols = ipv4 mailbox_size_limit = 0 mydestination = localhost myhostname = xxxxxx.com mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 myorigin = /etc/mailname readme_directory = no recipient_delimiter = + relayhost = smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu) smtpd_recipient_restrictions = permit_sasl_authenticated permit_mynetworks reject_unauth_destination smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination smtpd_sasl_auth_enable = yes smtpd_sasl_path = private/auth smtpd_sasl_type = dovecot smtpd_tls_auth_only = yes smtpd_tls_cert_file = /etc/letsencrypt/live/xxxxxxx/fullchain.pem smtpd_tls_key_file = /etc/letsencrypt/live/xxxxxxxx/privkey.pem smtpd_use_tls = yes virtual_alias_maps = mysql:/etc/postfix/mysql-virtual-alias-maps.cf virtual_mailbox_domains = mysql:/etc/postfix/mysql-virtual-mailbox-domains.cf virtual_mailbox_maps = mysql:/etc/postfix/mysql-virtual-mailbox-maps.cf virtual_transport = lmtp:unix:private/dovecot-lmtp
IIRC 當我遇到這個問題時，這是一個
smtp_tls_security_level = may選項。不要將其設置yes為可能會阻止與非 SSL 的 SMTP 伺服器通信（誰知道為什麼那些仍然存在？）這是我的工作配置 -root@darkstar:~/ # postconf -n alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases append_dot_mydomain = no biff = no config_directory = /etc/postfix inet_interfaces = all mailbox_command = procmail -a "$EXTENSION" mailbox_size_limit = 0 milter_connect_macros = i j {daemon_name} v {if_name} _ mydestination = mail.example.info, node3, localhost.localdomain, localhost myhostname = mail.example.info mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 myorigin = /etc/mailname readme_directory = no recipient_delimiter = + relayhost = smtp_tls_loglevel = 1 smtp_tls_security_level = may smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU) smtpd_milters = unix:/spamass/spamass.sock smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination smtpd_sasl_auth_enable = yes smtpd_sasl_path = private/auth smtpd_sasl_type = dovecot smtpd_tls_auth_only = yes smtpd_tls_cert_file = /etc/letsencrypt/live/example.info/fullchain.pem smtpd_tls_dh1024_param_file = /etc/ssl/postfix/dhparams.pem smtpd_tls_exclude_ciphers = aNULL, eNULL, EXPORT, DES, RC4, MD5, PSK, aECDH, EDH-DSS-DES-CBC3-SHA, EDH-RSA-DES-CDB3-SHA, KRB5-DES, CBC3-SHA smtpd_tls_key_file = /etc/letsencrypt/live/example.info/privkey.pem smtpd_tls_loglevel = 1 smtpd_tls_received_header = yes smtpd_tls_security_level = may smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtpd_tls_session_cache_timeout = 3600s smtpd_use_tls = yes tls_random_exchange_name = /var/run/prng_exch tls_random_source = dev:/dev/urandom virtual_alias_maps = mysql:/etc/postfix/mysql-virtual-alias-maps.cf,mysql:/etc/postfix/mysql-email2email.cf virtual_mailbox_domains = mysql:/etc/postfix/mysql-virtual-mailbox-domains.cf virtual_mailbox_maps = mysql:/etc/postfix/mysql-virtual-mailbox-maps.cf virtual_transport = lmtp:unix:private/dovecot-lmtp