gpbackup is working fine manually but not sending emails after the backup finished.
The YAML file might not be configured properly.
contacts: backup: - address: user@domain status: success: true - address: user@domain status: success_with_errors: true failure: true restore: - address: user@domain status: success: true success_with_errors: true failure: true
Product Version: 5.21
Make sure that YAML file has proper attributes, values and items listed in proper fashion.
https://gpdb.docs.pivotal.io/backup-restore/1-17/admin_guide/managing/backup-gpbackup.html#topic_qwd_d5d_tbb
contacts: gpbackup: - address: user@domain status: success: [true | false] success_with_errors: [true | false] failure: [true | false] gprestore: - address: user@domain status: success: [true | false] success_with_errors: [true | false] failure: [true | false]