求问mjj大佬为什么用别名发送时dkim没有记录，无法验证？

原帖  https://hostloc.com/thread-1265589-1-1.html 我把root和mail都加了dkim的txt，但mail-tester.测试中依然显示没配置dkim。https://www.mail-tester.com Your message is not signed with DKIM DomainKeys Identified Mail (DKIM) is a method for associating a domain name to an email message, thereby allowing a person, role, or organization to claim some responsibility for the message.        邮件标头也没有dkim记录 很奇怪这里可以验证成功https://mailadmin.zoho.com/cpanel/toolkit.do#runChecks，test.com和mail.test.com都成功验证  DKIM is configured 但是发件的话，用[email protected]（做为别名，通过[email protected]发）发件到mail-tester.com就验证不了dkim，用[email protected]的话dkim是正常的。 求问mjj大佬