OpenDKIM 報告“簽名表引用未知密鑰”（CentOS 8）

我正在嘗試在 CentOS 8 上使用 PostFix 配置 OpenDKIM。

我在中設置了以下內容/etc/opendkim.conf：

PidFile /run/opendkim/opendkim.pid
Mode    sv
Syslog  yes
SyslogSuccess   yes
LogWhy  yes
UserID  opendkim:opendkim
Socket  inet:8891@localhost
Umask   002
SendReports     yes
SoftwareHeader  yes
Canonicalization        relaxed/relaxed
Selector        default
KeyTable        /etc/opendkim/KeyTable
SigningTable    refile:/etc/opendkim/SigningTable
ExternalIgnoreList      refile:/etc/opendkim/TrustedHosts
InternalHosts   refile:/etc/opendkim/TrustedHosts
OversignHeaders From

我的/etc/opendkim/KeyTable文件如下：

mta1._domainkey.esfs.info     esfs.info:mta1:/etc/opendkim/keys/esfs.info/mta1.private

$$ Edit $$

我的/etc/opendkim/SigningTable文件包含：

*@esfs.info default._domainkey.esfs.info

$$ /Edit $$

我的/etc/opendkim/TrustedHosts文件是：

127.0.0.1
::1
*.esfs.info

我使用以下命令生成了我的域密鑰：

sudo opendkim-genkey -b 2048 -d your-domain.com -D /etc/opendkim/keys/your-domain.com -s mta1 -v

我將 , 的內容複製/etc/opendkim/keys/esfs.info/mta1.txt到我的 dns 條目中。

但是，當我測試密鑰時，我會收到一條警告說它不安全：

$ sudo opendkim-testkey -d esfs.info -s mta1 -vvv
opendkim-testkey: using default configfile /etc/opendkim.conf
opendkim-testkey: checking key 'mta1._domainkey.esfs.info'
opendkim-testkey: key not secure
opendkim-testkey: key OK

當我檢查伺服器狀態時，我得到以下資訊：

$ sudo systemctl status opendkim
● opendkim.service - DomainKeys Identified Mail (DKIM) Milter
  Loaded: loaded (/usr/lib/systemd/system/opendkim.service; enabled; vendor preset: disabled)
  Active: active (running) since Mon 2021-02-08 23:15:12 GMT; 5 days ago
    Docs: man:opendkim(8)
          man:opendkim.conf(5)
          man:opendkim-genkey(8)
          man:opendkim-genzone(8)
          man:opendkim-testadsp(8)
          man:opendkim-testkey
          http://www.opendkim.org/docs.html
Main PID: 80340 (opendkim)
   Tasks: 3 (limit: 4947)
  Memory: 2.8M
  CGroup: /system.slice/opendkim.service
          └─80340 /usr/sbin/opendkim -x /etc/opendkim.conf -P /run/opendkim/opendkim.pid

Feb 14 12:57:17 wp2.lostcarpark.com opendkim[80340]: CA0EC5E150: signing table references unknown key 'default._domainkey.esfs.info'
Feb 14 12:57:17 wp2.lostcarpark.com opendkim[80340]: CB0C55E150: signing table references unknown key 'default._domainkey.esfs.info'
Feb 14 12:57:17 wp2.lostcarpark.com opendkim[80340]: CBF885E150: signing table references unknown key 'default._domainkey.esfs.info'
Feb 14 12:57:17 wp2.lostcarpark.com opendkim[80340]: CCDDA5E150: signing table references unknown key 'default._domainkey.esfs.info'

以下來自/var/log/maillog：

Feb 14 14:52:24 wp2 postfix/pickup[279532]: warning: 374135E150: message has been queued for 1 days
Feb 14 14:52:24 wp2 postfix/pickup[279532]: 374135E150: uid=0 from=<root>
Feb 14 14:52:24 wp2 postfix/cleanup[279857]: 374135E150: message-id=<20210214145224.374135E150@esfs.info>
Feb 14 14:52:24 wp2 opendkim[80340]: 374135E150: signing table references unknown key 'default._domainkey.esfs.info'
Feb 14 14:52:24 wp2 postfix/cleanup[279857]: 374135E150: milter-reject: END-OF-MESSAGE from localhost[127.0.0.1]: 4.7.1 Service unavailable - try again later; from=<root@esfs.info> to=<root@esfs.info>

希望以上內容對解決問題有所幫助。如果有人能指出我正確的方向，我真的很感激。

看著：

dig default._domainkey.esfs.info. txt +short

這返回空，這是出乎意料的。相反，您使用不同的名稱mta1：

dig mta1._domainkey.esfs.info txt +short
"v=DKIM1; k=rsa; " "p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzPW/qEl5jIpReXwxZ8WaS07dn3QLwa4/OWFn17bh84SM0ac7jMvo8jbBmotuO0o0oFeoODPFEYUyvXx0TScrkhycRuKqlhraBNOiPiLgRgP9L0/5Z4VdWdAhASgFMfa4mK7lfuZ85dMdyshp/SN9R3zNOvExEtuHNvQ0eUkTBcuY4UneAHhlx5SlRORdSzq02eCsgEskMLzBd7" "tEJargXaRjSLdMLnML8yJVtDHhPBH/G8AJsOWOPoXDyt6vI0pWW1o6A7BEleXYouYlge4w6S2Kgzv+QSBJoLxlCyNDo1kBG2lag5Jos4BjlahIYh1gzI5aDozG5VlVeLAq3B7QMQIDAQAB"

引用自：https://serverfault.com/questions/1053627