James Brown:
> The flow of my email is:
>
> Mail.app -> ASSP -> Postfix -> amavisd-new -> Postfix -> Astarto
> Gateway -> Internet
>
> I think :-)
Your mail is modified AFTER the DKIM signature is computed. Therefore,
the source of the message not breaking the signature.
However, you can use this source to send the same test message
repeatedly, and to find out what your email looks like at different
points AFTER it is signed. This will reveal what is making the
change that breaks the DKIM signature.
Wietse
