You want to enable DKIM for 2 servers in the same domain, where you can have one server forwarding some emails to another server with the same base domain. This helps prevents emails from getting incorrectly blocked.
In order to understand the solution steps, we will consider 2 Kerio Connect mail servers
mail2.domain.com, where mail1 will be forwarding emails to mail2.
Access to Kerio Connect administration is required for both the servers for the below steps:
- Setup a DKIM record for the
mail1.domain.comserver as explained in the Adding a DKIM Record to Your DNS section of the Configuring DNS for DKIM in Kerio Connect article. Only the steps outlined in this section need to be followed.
- Verify that DKIM is working correctly for
- On the
mail1.domain.comserver, go to the Kerio Connect
dkimdirectory. Below are the default locations:
Windows: C:\Program Files\Kerio\MailServer\sslcert\dkim\
- Copy the contents of the
- Go to
mail2.domain.comand stop the Kerio Connect service (Windows, macOS/Linux).
- On the
mail2.domain.comserver, go to the same
- Copy it's
private.keyfile to another location on the server.
- Replace the contents of the
private.keyfile on the
mail2.domain.comserver with the contents of the
private.keyfile from the
mail1.domain.comserver (from step 4 above).
- Start the Kerio Connect service on
Verify that you are now able to forward emails from
mail2.domain.com and they are not blocked.
In the case there are issues with mail forwarding, open a Support request with us.