Here in the old opendkim source
https://sourceforge.net/p/opendkim/git/ci/613e5ccd84eb040edcdf52f6eb737c7d54a93dcf
is discussed
opendkim/README
HANDLING 8-BIT MESSAGES
=======================
-SMTP was not designed for handling of other than 7-bit ASCII,
...
Instead, the MTA that will handle the 8-bit message has to downgrade
it before
presenting it for signing.
...
In the current opendkim source there is no more information about "HANDLING
8-BIT MESSAGES" that I see.
Here on the Postfix list
Howto avoid 8BITMIME
https://groups.google.com/forum/#!topic/mailing.postfix.users/LvOfjL6H0Bc
there is discussion in Postfix the conversion is still needed before you DKIM
sign
Use a dummy SMTP-based after-queue content filter to force 8->7
conversion, then DKIM sign the message with the smtpd+cleanup+milter
after the filter.
What really is the current state for Opendkim? Is the "force 8->7" still
needed before?
If the answer is yes then what is the detail for best doing it? "Use a dummy
... filter" does not tell so much.
Is it Amavis policy bank I need? That is very heavy.
Maybe something in Opendkim can do it already?
Received on Mon May 23 2016 - 13:51:54 PST