Version 57 (June 12, 2022)
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Setup:
* Fixed issue upgrading from Mail-in-a-Box v0.40-v0.50 because of a changed URL that Nextcloud is downloaded from.
Backups:
* Fixed S3 backups which broke with duplicity 0.8.23.
* Fixed Backblaze backups which broke with latest b2sdk package by rolling back its version.
Control panel:
* Fixed spurious changes in system status checks messages by sorting DNSSEC DS records.
* Fixed fail2ban lockout over IPv6 from excessive loads of the system status checks.
* Fixed an incorrect IPv6 system status check message.
