On 2021-03-06, Martin Gregorie  wrote:
> Two-three weeks ago I started to see this message in my daily logwatch
> report:
>
> **Unmatched Entries**
>         1   Mar  5 07:38:54 rpi postfix/smtp[9344]: cannot load
> Certification Authority data, CAfile="/etc/pki/tls/certs/ca-bundle.crt",
> CApath="/etc/pki/tls/certs": disabling TLS support
>
> I'm running a 512 MB RPi 2B with Postfix installed as its MTA using
> Raspbian Buster.
>
> Can anybody suggest what package I need to install to get the
> certificates installed and so get rid of its complaints.
>

Not got a running "Buster" raspberry PiOS, but a Debian based system search
gives

ca-certificates - Common CA certificates
ca-certificates-java - Common CA certificates (JKS keystore)

HTH

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