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page 109 of 132

ToolVox® X3

Administrator Guide

splitlesouttoanumberofsubdirectoriestokeeplookupsfast.Thisoptioncorrelatestothehash_

queue_depthdirectiveanddefaultsto2,whichissuitableformostmoderateandevenrelatively

largeinstallations.Becausethenumberofdirectoriesinuseincreasesthesearchtimeforobject

seeks,usingtoohighavalueherecanbeharmfultoperformance.

Name of queue dirs split across subdirs

Postxusesanumberofqueuestoorganizemessageswithvaryingstatesanddestinations.

Eachofthesequeuescanbeconguredtousehashedsubdirectories.Ifaqueueisselected

here,itwillbestoredinahashedsubdirectory.Insomecases,aqueuemustnotbelistedhere

asperformancewillbeseverelyimpacted,specicallytheworld-writablemaildropdirectory.The

deferlogledirectory,ontheotherhand,mustbestoredinhasheddirectoriesorperformance

willsuffer.Thisoptioncorrespondstothehash_queue_namesdirectiveanddefaultsto

incoming,active,deferred,bounce,defer,ushandisrarelynecessaryorbenecialtoalterthis

conguration.

Max number of Received: headers

AmessagethatcontainsmoreReceived:headersthanthiswillbounce.Anextremelylargenumber

mayindicateamaillooporamisconguredmailserversomewhereinthepathofthismessage.

Thisoptioncorrelatestothehopcount_limitdirectiveanddefaultsto50.Thisvaluerarelyneedsto

bealteredfromitsdefault.

Time in hours before sending a warning for no delivery

Ifamessagecannotbedeliveredimmediately,itwillbequeuedforlaterdelivery.Afterthisnumber

ofhours,ifthemessagestillcannotbedelivered,awarningwillbesenttothesendernotifyingthem

thattheserverhasbeenunabletosendthemessageforaspeciedtime.Thiscorrelatestothe

delay_warning_timedirectiveanddefaultstonotsendingawarning.

Network interfaces for receiving mail

ThisoptionconguresthenetworkaddressesonwhichPostcwillacceptmaildeliveries.By

default,Postxwillacceptmailoneveryactiveinterface.Here,Postxwillacceptthevariables

discussedearlier.Thisoptioncongurestheinet_interfacesdirective.

Idle time after internal IPC client disconnects

ThisoptionsetsthetimeinsecondswhenaninternalIPCclientwilldisconnect.Thisallowsservers

toterminatevoluntarily.Thisfeatureisusedbytheaddressresolutionandrewritingclients.This

optioncorrelatestotheidle_timedirectiveanddefaultsto100seconds.Thisoptionshouldnever

needtobealteredundernormalcircumstances.

Timeout for I/O on internal comm channels

ThisoptiondeterminestheamountoftimeinsecondstheserverwillwaitforI/Ooninternal

communicationchannelsbeforebreaking.Ifthetimeoutisexceeded,theserverabortswithafatal

error.Thisdirectivecorrespondstotheipc_timeoutdirectiveanddefaultsto3,600second(60

minutes).

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