Parsing an empty string into a slice variable should result in an empty slice instead of a slice with a single "" string. The bug caused all email to be rejected due to abuse protection when no BLACKLIST was configured (environment variable being an empty string).
Parsing an empty string into a slice variable should result in an empty slice instead of a slice with a single "" string. The bug caused all email to be rejected due to abuse protection when no BLACKLIST was configured (environment variable being an empty string).