I've downloaded and imported the gpg key per instructions here https://mcgrail.com/template/kam.cf_channel
The command I run for updates is: /usr/bin/sa-update -v --channelfile /etc/mail/spamassassin/sare-sa- update-channels.txt --gpgkey 6C6191E3 --gpgkey 24C063D8 && /etc/init.d/spamassassin restart What I'm getting for output of the cronjob is: Update available for channel kam.sa-channels.mcgrail.com: -1 -> 1607355384 http: (curl) GET http://sa-update-kam.snb.it/1607355384.tar.gz, success http: (curl) GET http://sa-update-kam.snb.it/1607355384.tar.gz.sha512, success http: (curl) GET http://sa-update-kam.snb.it/1607355384.tar.gz.asc, success error: GPG validation failed! The update downloaded successfully, but the GPG signature verification failed. channel 'kam.sa-channels.mcgrail.com': GPG validation failed, channel failed Update failed, exiting with code 4 This is Ubuntu 20.04.1 LTS Spamassassin spamassassin -V SpamAssassin version 3.4.4 running on Perl version 5.30.0 -- Chris 31.11972; -97.90167 (Elev. 1092 ft) 20:00:37 up 11:04, 1 user, load average: 1.50, 1.16, 1.02 Description: Ubuntu 20.04.1 LTS, kernel 5.4.0-58-generic
