On 12 Oct 2020, at 02:51, webad...@exalt.com.au wrote: > I created a client library to send emails for a webapp. > > When the client library makes a connection to the SMTP server, and then do > NOT add Message-Id header, Message-ID (with a capital D) header is added, > and the SMTP server adds a incorrect DKIM-Signature record 'h' part, > invalidating the generated DKIM signature value.
This I s not a dovecot issue I don't think, this is a configuration issue with your MTA (exit, postfix, sendmail, et al). > The work around is to add to the message a Message-Id with a little ‘d’ > header. Then the SMTP server processes the email with the correct > DKIM-Signature, correct DKIM ‘h’ part and does not add a Message-ID header. This seems very very wrong as the headers in mail messages are not case sensitive. Also, I do not think dovecot adds message-id headers at all, and dovecot would not be involved in sending mail. -- Ah we're lonely, we're romantic / and the cider's laced with acid / and the Holy Spirit's crying, Where's the beef? / And the moon is swimming naked / and the summer night is fragrant / with a mighty expectation of relief