Hi @all, is there a way to notify a sender of an email immediately when the recipient is unknown? Our clients complain about a delay between sending the email and getting the 550er response. what about lowering "address_verify_negative_expire_time"? it is set to 3days now. is this option the only skew to tune? I'd like to get notified for "unknown user" immediately, but for "over quota" etc a delay higher than 1 day, because the quota might change. sorry for my bad english ;-)
