... then I would like to quarantine this mail as spam....
There are two standard ways to categorize mail as spam: - via a spam_scanner as part of @spam_scanners (usually SpamAssassin)- via an av_scanner as part of @av_scanners and @virus_name_to_spam_score_maps.
Other non-standard ways involve writing code: - some custom spam_scanner, or - Amavis::Custom, or - some custom Mail::SpamAssassin::Plugin
