远程服务器上的后缀SMTP响应rcpt（收件人）的554中继访问被拒绝。在'上工作正常；本地主机'；smtp服务器

我正在尝试通过一个远程虚拟机发送电子邮件，该虚拟机作为smtp服务器运行

postfix

但是，在发送

rcpt

cmd时，我收到了一个

554-中继访问被拒绝

错误

(554, b'5.7.1 <xxxxx@xyz.org>: Relay access denied')

从来宾计算机运行时，不会发生以下错误：

---

postfix服务器上的main.cf中将出现配置错误，该服务器未将本地网络设置为允许中继

你需要像这样的东西吗

---

Localnetworks=0.0.0.0/24（您的网络或ip是来宾计算机）

Postfix“Ubuntu上的默认配置只允许在本地接口（即localhost）上进行中继访问。在其他接口（VM网络）上连接时，需要SMTP身份验证

因此，您可以将身份验证添加到SMTP呼叫或将主机ip添加到允许的中继网络

要实现后者，请在

/etc/postfix/main.cf

文件中找到以下行

mynetworks = 127.0.0.0/8

并将其更改为

127.0.0.0/8,10.0.0.0/8

然后用

sudo postfix reload

编辑： 或者，您可以将

mynetworks\u样式设置设置为

mynetworks_style = subnet

请参见
问题已解决。这是我现在使用的配置。问题在于
mynetworks
指令，原因是
itchee

# 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/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
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.

myhostname = localhost
#myorigin = $mydomain
#relayhost = $mydomain


alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
mydestination = localdomain, localhost, localhost.localdomain, localhost

relayhost =

#mynetworks = 127.0.0.0/8 [::]/128 [::ffff:127.0.0.0]/104 [::1]/128

mynetworks = 127.0.0.0/8 10.0.0.0/8 172.0.0.0/8 [::]/128 [::ffff:127.0.0.0]/104 [::1]/128


mailbox_size_limit = 0
recipient_delimiter = +


#inet_interfaces = localhost

Mar 24 22:57:38 04305ce1d661后缀/smtpd[25121]：无队列：拒绝：来自未知的RCPT[172.17.42.1]：554 5.7.1:拒绝中继访问；from=to=proto=SMTPHi eclewlow，欢迎使用堆栈交换网络！既然是伊奇的回答帮助你解决了问题，你应该接受他们的回答，给他们荣誉，并告诉其他人你的问题已经解决了。有关详细信息，请参阅。另外：这更像是一个系统管理问题，而不是一个与编程相关的问题，因此它与StackOverflow无关。服务器故障已经过去。花了3个小时来研究这个问题，这个问题和那个问题完全一样。谢谢你的帮助！你是我的英雄
mynetworks_style = subnet

# 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/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
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.

myhostname = localhost
#myorigin = $mydomain
#relayhost = $mydomain


alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
mydestination = localdomain, localhost, localhost.localdomain, localhost

relayhost =

#mynetworks = 127.0.0.0/8 [::]/128 [::ffff:127.0.0.0]/104 [::1]/128

mynetworks = 127.0.0.0/8 10.0.0.0/8 172.0.0.0/8 [::]/128 [::ffff:127.0.0.0]/104 [::1]/128


mailbox_size_limit = 0
recipient_delimiter = +


#inet_interfaces = localhost