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haraka-plugin-bounce

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Provide multiple configurable strategies to detect, validate, and process email bounces

github.com/haraka/haraka-plugin-bounce

haraka/haraka-plugin-bounce

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[validation] ; Maximum age in days for accepting bounces max_hash_age_days=6 ; Algorithm used for hash generation hash_algorithm=sha256 ; Secret key for hash generation (create with openssl rand -base64 32) ; secret=your_generated_secret_here [check] ; Check that bounce has only one recipient (RFC compliant) ; single_recipient=true ; Check for empty Return-Path header ; empty_return_path=false ; Check SPF on the IPs found in the bounce ; bounce_spf=true ; Enable hash validation for outbound mail and verification for inbound bounces ; hash_validation=false ; Check if the bounce is newer than max_hash_age_days ; hash_date=true [reject] ; Reject bounces with multiple recipients ; single_recipient=true ; Reject bounces with non-empty Return-Path ; empty_return_path=false ; Reject bounces that fail SPF validation ; bounce_spf=false ; Reject bounces to addresses in bounce_bad_rcpt ; bad_rcpt=true ; Reject all bounces (extreme measure) ; all_bounces=false ; Reject bounces with invalid/missing validation hash ; hash_validation=false ; Reject bounces older than max_hash_age_days ; hash_date=false