在服务器上，我同时运行docker映像和 postfix smtp 服务器。smtp 服务器可通过 localhost 访问，并且未安装在任何类型的容器中。
问题是我可以在任何容器外使用 sendemail 通过终端发送电子邮件，但我不能通过在任何容器内运行 sendemail 的终端发送电子邮件。
后缀配置如下：
# 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 $mail_name (Debian/GNU)
biff = no
# appending .domain is the MUA's job.
append_dot_mydomain = no
# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h
readme_directory = no
# TLS parameters
smtpd_tls_cert_file=/etc/letsencrypt/live/ellak.org/fullchain.pem
smtpd_tls_key_file= /etc/letsencrypt/live/ellak.org/privkey.pem
smtpd_use_tls=yes
smtpd_tls_session_cache_database = btree:${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 = guest8.ellak.gr
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = mail.ellak.org, guest8.ellak.gr, localhost.ellak.gr, localhost
#Virtual alias domains
virtual_alias_domains = ellak.org
# RELAY Options
relayhost = [mail1.ellak.gr]:587
smtp_sasl_auth_enable = yes
smtp_sasl_security_options = noanonymous
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_use_tls = yes
smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt
local_recipient_maps = proxy:unix:passwd.byname $alias_maps
smtp_tls_note_starttls_offer = yes
#Network Access Options
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 172.17.0.0/16
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
relay_domains = *
在我运行的容器内：
sendemail -s 172.17.0.1:25 -f [email protected] -t [email protected] -u 你好 -m 你好
并输出以下错误：
Nov 27 19:51:14 7e56b4e22e09 sendemail[1988]: WARNING => The recipient <[email protected]> was rejected by the mail server, error follows:
Nov 27 19:51:14 7e56b4e22e09 sendemail[1988]: WARNING => Received: 454 4.7.1 <[email protected]>: Relay access denied
Nov 27 19:51:14 7e56b4e22e09 sendemail[1988]: ERROR => Exiting. No recipients were accepted for delivery by the mail server.
在我得到的后缀日志上是：
Nov 27 21:42:54 guest8 postfix/smtpd[14979]: NOQUEUE: reject: RCPT from unknown[172.18.0.5]: 454 4.7.1 <[email protected]>: Relay access denied; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<7e56b4e22e09>
Nov 27 21:42:54 guest8 postfix/smtpd[14979]: lost connection after RCPT from unknown[172.18.0.5]
Nov 27 21:42:54 guest8 postfix/smtpd[14979]: disconnect from unknown[172.18.0.5]
Nov 27 21:46:14 guest8 postfix/anvil[14982]: statistics: max connection rate 2/60s for (smtp:172.18.0.5) at Nov 27 21:42:54
Nov 27 21:46:14 guest8 postfix/anvil[14982]: statistics: max connection count 1 for (smtp:172.18.0.5) at Nov 27 21:42:41
Nov 27 21:46:14 guest8 postfix/anvil[14982]: statistics: max cache size 1 at Nov 27 21:42:41
您对我将如何在 docker 容器中发送电子邮件有任何想法吗？
172.18.0.5 不包含在
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 172.17.0.0/16mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 172.16.0.0/12这包括所有私有 172.16 子网。