Why doesn't dkim sign the email?

Question

postfix

Hello everyone, I set up DKIM, it seems to work:

Dec 27 11:10:03 mailer opendkim[378]: OpenDKIM Filter v2.11.0 starting (args: -x /etc/opendkim.conf)
Dec 27 11:10:10 mailer postfix/postfix-script[551]: warning: symlink leaves directory: /etc/postfix/./makedefs.out
Dec 27 11:10:10 mailer postfix/postfix-script[719]: starting the Postfix mail system
Dec 27 11:10:10 mailer postfix/master[721]: daemon started -- version 3.4.13, configuration /etc/postfix

But the letters are not signed, I connect via port 25, there are no errors, tell me in which configuration file there may be problems?

Answer 1

To sign SMTP traffic, you must either send a letter with authorization or register the host from which the sending is in InternalHosts and ExternalIgnoreList. At the same time, check that the address of the envelope corresponds to the domain for which the signature is configured, because the domain is usually chosen by the envelope address (envelope-from aka SMTP MAIL FROM aka Return-Path) and not by the From header.