Fixes for handling missing Mime-Version
Fixes for handling missing Mime-Version

damoxc/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,damoxc/dovecot,LTD-Beget/dovecot,Distrotech/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,Distrotech/dovecot,Distrotech/dovecot,Distrotech/dovecot,Distrotech/dovecot,damoxc/dovecot,damoxc/dovecot,damoxc/dovecot