postfix/error[2874]: 1398FA00AC7: to=<[email protected]>, relay=none, delay=0.12, delays=0.1/0/0/0.02, dsn=4.3.5, status=deferred (delivery temporarily suspended: Host or domain name not found. Name service error for name=postmaster.mydomain.lan type=A: Host not found)
我无法弄清楚为什么 postmaster.mydomain.lan 停止解析，因为我无法找出它是否有 A 记录。
postconf -n 输出：
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
html_directory = no
inet_interfaces = localhost
inet_protocols = ipv4
mail_owner = postfix
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man
mydestination = $myhostname, localhost.$mydomain, localhost
newaliases_path = /usr/bin/newaliases.postfix
queue_directory = /var/spool/postfix
readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES
relayhost = postmaster.mydomain.lan
更新：弄清楚了这一点。在更新我们的区域传输文件时，postmaster.mydomain.lan 的 DNS 记录被覆盖：/