Can't Receive Mail after update: Error while reading file

Hi,

After apt update && apt -y upgrade
getting this error when trying to receive email:
2025-06-24 14:24:09 TLS error on connection from redacted [redacted] (cert/key setup: cert=/usr/local/hestia/ssl/certificate.crt key=/usr/local/hestia/ssl/certificate.key): Error while reading file.

Have tried v-rebuild-mail-domains

Not sure what’s going on here, the certificates are valid as far as I can tell? RW by root in /usr/local/hestia/ssl, is exim able to access?

The perms should be 660 and Debian-exim:mail.

chown Debian-exim:mail /usr/local/hestia/ssl/certificate.*
chmod 660 /usr/local/hestia/ssl/certificate.*