I’m trying to update my email server and I keep getting an error regarding invalid signatures:
“GPG error: index - powered by h5ai v0.29.2 (https://larsjung.de/h5ai/) InRelease: The following signatures were invalid: EXPKEYSIG 5CB27E1358E2F2A7 Kopano Development development@kopano.io”
I searched the web and it looks like the key has expired and I need to manually replace it, but I am not sure how to go about doing this. Can someone point me in the right direction? Thank you.
Sorry, error code did not copy correctly in my first post.
W: GPG error: index - powered by h5ai v0.29.2 (https://larsjung.de/h5ai/) InRelease: The following signatures were invalid: EXPKEYSIG 5CB27E1358E2F2A7 Kopano Development development@kopano.io
I had the same problem and soved it that way. Please note that it is up to your to decide wether it is safe enough for you to simply download the key from a server with no additional verification than the domain-validated SSL connection.
cd ~
wget https://serial:XXXXXXXXXXXXXXXXXX@download.kopano.io/supported/core%3A/8.7/Debian_10/Release.key
where XXXX is your Kopano serial number. If you don’t have it at hand you can read it somewhere in the file
/etc/apt/sources.d/kopano-core.list
2)
apt-key add Release.key
Yours,
Gerd
Thank you Wilhelm for the tip. Problem is all fixed now.