如果我通过 LAN 上的 25 端口连接到我的邮件服务器，它会提供 STARTTLS
telnet mailserver.com 25
Trying 192.168.0.x...
Connected to mailserver.com
Escape character is '^]'.
220 mailserver.com ESMTP Postfix
ehlo bla
250-mailserver.com
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
如果我从外部来源尝试相同操作，则不会收到 STARTTLS 优惠：
telnet mailserver.com 25
Trying xx.xxx.xxx.xx...
Connected to mailserver.com
Escape character is '^]'.
220 mailserver.com ESMTP Postfix
ehlo bla
250-mailserver.com
250-SIZE 10240000
250-VRFY
250 DSN
但奇怪的是，它通过提交（587）端口从外部工作正常。
我的 postconf -n
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
broken_sasl_auth_clients = yes
command_directory = /usr/sbin
config_directory = /etc/postfix
daemon_directory = /usr/libexec/postfix
data_directory = /var/lib/postfix
debug_peer_level = 2
debugger_command = PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin ddd $daemon_directory/$process_name $process_id & sleep 5
html_directory = no
inet_interfaces = all
inet_protocols = all
mail_owner = postfix
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man
mydestination = $myhostname, localhost.$mydomain, localhost
myhostname = mailserver.com
myorigin = $myhostname
newaliases_path = /usr/bin/newaliases.postfix
queue_directory = /var/spool/postfix
readme_directory = /usr/share/doc/postfix-2.10.1/README_FILES
relay_domains = hash:/etc/postfix/relay_domains
sample_directory = /usr/share/doc/postfix-2.10.1/samples
sendmail_path = /usr/sbin/sendmail.postfix
setgid_group = postdrop
smtp_tls_security_level = may
smtpd_banner = $myhostname ESMTP $mail_name
smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, permit_tls_clientcerts, reject_unverified_recipient, reject_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/bla/fullchain.pem
smtpd_tls_key_file = /etc/letsencrypt/live/bla/privkey.pem
smtpd_tls_security_level = may
transport_maps = hash:/etc/postfix/transport_maps, $relay_domains
unknown_local_recipient_reject_code = 550
virtual_alias_domains = hash:/etc/postfix/virtual_domains
和我的master.cf：
smtp inet n - n - - smtpd
#smtp inet n - n - 1 postscreen
#smtpd pass - - n - - smtpd
#dnsblog unix - - n - 0 dnsblog
#tlsproxy unix - - n - 0 tlsproxy
submission inet n - n - - smtpd
-o smtpd_tls_security_level=encrypt
-o smtpd_sasl_auth_enable=yes
smtps inet n - n - - smtpd
-o smtpd_tls_wrappermode=yes
-o smtpd_sasl_auth_enable=yes
因此，端口 25 上的 STARTTLS 似乎只提供给内部 IP 地址，而端口 587 上的 STARTTLS 也提供给外部 IP 地址。我的目标是允许端口 25 上的 STARTTLS 也用于外部 IP。我的错误在哪里？
提前非常感谢你干杯