Check concurrently checks SURBL spam list.

Check concurrently checks SURBL spam list.

NewData returns a new Data.

NewQueue returns a new Queue.

ChannelCounter counts through channels.

Data is a set of data in map data structure.

DomainInfo contains domain information from Surbl.org.

DomainInfo contains domain information from Surbl.org.

Queue contains the slice of timestamps and other rate limiter configurations.

Counter is an interface for counting.