Hello
I have an exchange user who uses gmail as final mail client. So we made an automatic forward (delivery options) on his mailbox to an external account which is his gmail account.
When an incoming email (from a domain signing its mail with dkim) is sent to this user, the mail is forwarded to gmail, but the dkim verification fails with the error body hash did not verify. It seems that exchange is touching the body part of the mail while forwarding causing the body hash verification to fail.
It is not a gmail problem, i am able to reproduce the same bug with a forwarding to an external account like yahoo (in fact every mail systems using dkim).
Is there a workaround?
Benjamin Genèze