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</o:shapelayout></xml><![endif]--></head><body lang=EN-AU link="#0563C1" vlink="#954F72" style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal>I created a client library to send emails for a webapp.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>After connecting to the SMTP server with credential setup in CPANEL, and then do NOT add Message-Id header, the DKIM signature 'h' record created by dovecot/WHM is wrong, and a Message-ID (with a capital D) header is added, invalidating the generated DKIM signature value.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>This causes outlook, yahoo, gmail and other email recipients to add 'dkim:fail' to the message, and thus relegate it to junk or spam.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>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 generated DKIM, correct DKIM ‘h’ record and does not add a Message-ID header.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>My SMTP hosting providers that run the WHM/dovecot/CPANEL software are refusing to raise this as a bug and have requested that I do it.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='mso-fareast-language:EN-AU'>Regards<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-AU'>Robert<o:p></o:p></span></p></div></body></html>