victor duchovni dxdewmdieulnutmorganstanleycom wed feb 13 2008 114217am 0100 geert hendrickx wrote tried disable_dns_lookupsyes causes bunch problems postfix doesnt look dns maybe smtp processes run chrooted etchosts file chroot area op better informed default postfix explicitly uses dns explained previous response solution sites nsswitch files dns want postfix use smtp_host_lookup native viktor disclaimer offlist followups get onlist replies get ignored please ignore replyto header unsubscribe postfixusers list visit httpwwwpostfixorglistshtml click link response solves problem best way thank send worked thanks followup must respond please put worked thanks subject delete quickly tue 05 aug 2008 230141 0500 force postfix look hosts file first