signature EXIM_CONFIG = sig val aliases : string val aliasesDefault : string (* Paths to e-mail alias files. * The "default" version is for catch-alls. *) val reload : string (* Command-line to reload exim configuration *) val handleDomains : string (* File to which to write a comma-separate list of domains to handle mail for *) val relayDomains : string (* File to which to write a comma-separate list of domains to relay mail for *) val mainLog : string (* Path to main log file *) end