victor duchovni dxdewmdieulnutmorganstanleycom tue feb 12 2008 110601am 0300 vl wrote hello postfix users need help setting postfix setup small internet gateway runs postfix postfix set deliver mail internal network isps smtp server mail local users system messages root delivered local mailbox later installed heartbeat replicated gateway two computers share storagedrbd postfix runs active node uses cluster ip problem second passive node doesnt run postfix want receive system alerts mailbox located shared storageavaliable active node looks like run two copies postfix machine one server gateway accepts messages cluster ip sends isp second accept local messages send 1st postfix yes always install least two postfix instances mail servers default instance etcpostfix vanilla nullclient handles local submission relays everything via smtp internal msa real mta always second instance sometimes configured cluster configuration failover actually bit interesting since machine pair runs native listener instance twin failed drainonly queue twin anyway fully automated set spend time right works tm easy support find multiple singlefunction simple instances large scale environments easier manage monolithic kitchen sink 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 213424 0500 local delivery cluster enviroment