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OpenDKIM on backup MX

Hello friends,
On Debian Jessie I would like to enable OpenDKIM on my two Postfix
servers.

My question is how to behave with the secondary backup server.
Enable it as on the first and then I copy the key from first to
secondary?
And how I will write DNS txt record that must take the two servers
information?

Many thanks!

Davide

Comments

Re: OpenDKIM on backup MX

By Ralf Hildebrandt at 10/10/2017 - 05:08

* Davide Marchi < ... at msw dot it>:
For signing when sending out mails?

The DNS records merely specify the key material for the SENDER DOMAIN,
servers do not matter.