DKIM signing does not work

Hi,

I enabled DKIM signing on my Ciphermail Gateway for one internal Domain,
with a generated private/public Key-Pair. The DKIM-DNS-Record with the public Key is
published on our DNS-Server-Zone for this Domain.
When i send a E-Mail to an external Recipient from a Sender of that Domain,
there is no DKIM-Signature in the E-Mail-Header.

In the Ciphermail-Logfile are INFO Entrys for every external Recipient:

... ciphermail-gateway-backend[]: .. INFO DKIM signing is disabled for the sender ...

Can anyone help me, so what is my mistake?

I think Ciphermail signs all outgoing emails using DKIM, or am I thinking wrong?

Does postfix perhaps need opendkim to sign outgoing emails?

King regards,

Stephan Unsin

Hi,
I have to correct my first entry.

In the ciphermail log file there are INFO entries for external recipients like this one:

DKIM signing is disabled for the recipient(s) ...

I don´t understand why "disabled for the recipient.

Kind regards,
Stephan Unsin

Some settings are sender *and* recipient settings like the "DKIM
signing enabled" setting. This means that the "DKIM signing enabled"
setting should be enabled for the sender *and* the recipient. The main
reason some settings are taken into consideration for the sender and
recipient is that this gives you the greatest flexibility.

The message "DKIM signing is disabled for the recipient(s) ..." means
that the "DKIM signing enabled" is not enabled for the recipient. The
most likely reason for this is that the global setting value for "DKIM
signing enabled" is not set.

If you enabled a setting for the global settings, both sender and
recipients will inherit the setting.

So to fix your problem, the best would be to enable "DKIM signing
enabled" for the global settings. If all domains and users inherit this
value (which is the default), all email sent to external recipients
will be DKIM signed (if a DKIM key is configured).

Kind regards,

Martijn Brinkers

···

On Sat, 2021-10-30 at 17:17 +0000, sunsin--- via Users wrote:

Hi,
I have to correct my first entry.

In the ciphermail log file there are INFO entries for external
recipients like this one:

DKIM signing is disabled for the recipient(s) ...

I don´t understand why "disabled for the recipient.

--
CipherMail email encryption
Email encryption with support for S/MIME,
OpenPGP, PDF Messenger and Webmail Messenger

Hi Martin,

that´s it. I enabled "DKIM signing enabled" in the global settings and the DKIM-Signature is
in the E-Mail Header.

Thank you very much.

Kind regards

Stephan Unsin