我的邮件服务器配置相当新。我正在尝试从客户端（JIRA）发送测试邮件，这是在不同的域中，主服务器在不同的域中，并且我要发送的电子邮件在不同的域中。当我将测试邮件发送到配置邮件服务器的域时，没有问题，但是当将其发送到外部域时，我收到此错误：
RELAY ACCESS DENIED
我尝试按照不同的论坛所述进行不同的参数更改，但未能成功。有人可以帮我吗？
请找到main.cf配置文件：
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
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
disable_dns_lookups = yes
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,<hostname>,<hostname.domainname>,localhost,<domain name where i want to send the email>
mydomain = <domainname>
myhostname = <hostname>
mynetworks = 127.0.0.0/8,99.999.99.999/25
myorigin = $mydomain
newaliases_path = /usr/bin/newaliases.postfix
queue_directory = /var/spool/postfix
readme_directory = /usr/share/doc/postfix-2.10.1/README_FILES
relay_domains = $mydestination
sample_directory = /usr/share/doc/postfix-2.10.1/samples
sendmail_path = /usr/sbin/sendmail.postfix
setgid_group = postdrop
smtpd_recipient_restrictions = permit_sasl_authenticated permit_mynetworks reject_unauth_destination
smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
unknown_local_recipient_reject_code = 550
答案1
您需要将发送服务器添加到relayhost，如下所示：
relayhost = 1.2.3.4
替换1.2.3.4为您的发送服务器的 IP。
然后检查并重新加载配置：
postconf check
postconf reload
然后再试一次。