postfix and 550s for non existent users at virtual domains Home › Forums › OS X Server and Client Discussion › Mail › postfix and 550s for non existent users at virtual domains This topic has 0 replies, 1 voice, and was last updated 21 years, 2 months ago by bluepolo. Viewing 1 post (of 1 total) Author Posts August 22, 2005 at 9:27 pm #362878 bluepoloParticipant Hi The subject says it all – currently default postfix config accepts email for any user at a virtual domain and then generates the 550 later. Well this is unclever and leads to DHAs and other DOS, can we have synchronous rejecting ie immediate 550s for non existent users at virtual domains? TIA BP Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In