An exported configuration file saves the settings of message processing rules (including predefined Allowlist and Denylist rules), and personal lists of allowed and denied addresses.
During the import, the values from the configuration file will be migrated for the selected settings.
Message processing rules are imported with the following changes:
The Notify administrator setting of version 1.1 MR3 is transferred to the Notify recipients from the general list notifications setting in version 2.1.
The following settings of version 1.1 MR3 that are lacking from version 2.1 are deleted:
Anti-Spam module settings (message processing based on a DNSBL list, use of custom DNSBL and SURBL lists, elevation of the spam rating for messages written in selected languages, scans of attachments in RTF format, message size limit)
Settings for sending notifications to a recipient (including the original message or without it)
New settings of the 2.1 version that are not available in version 1.1 MR3 are set to default values.