DKIM to passes on multiple domains internally but fails verification as content changed upon delivery to an external mail service.
Any know bugs/fixes?
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If you're doing the DKIM signing with amavis, here's a possible fix (taken from https://git.dotlan.net/dhoffend/ansible-role-kolab/blob/master/templates/amavis/65-dkim.j2#L17):
$signed_header_fields{'received'} = 0;
The issue is probably caused by Postfix being configured to remove the Received: field for outgoing emails.