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ToolVox® X3
Administrator Guide
Transport Mapping
Thetermtransportreferstothemechanismusedtodeliverapieceofemail.Specically,SMTPand
UUCParemailtransportssupportedbyPostx.Transportmappingcanbeusedforanumberof
purposes,includingSMTPtoUUCPgatewaying,operatingPostxonarewallwithforwardingtoan
internalmailserver,etc.
Transport mapping lookup tables
Thisoptionconguresthepathtoalecontainingoneormoretransportmappings.Thesetables
arelikemappingtables,andareconvertedtoadatabaseandusedbyPostxinthesameway.This
optioncorrelatestothetransport_mapsdirective.Thisfeatureisdisabledbydefault.Acommon
valueforthisoptionis/etc/postx/transport.
Tocreateanewmapping,rstdenethemappingle.ThenclickAdd a mapping.Ifyourgoalis
toredirectmailtoaprotectedinternalhostfromPostxrunningonarewall,youcouldenterthe
outsidedomainnameintotheNameeld,swelltech.com,andthenenterintotheMaps to...eld
theaddressoftheinternalmachine,smtp:privatehost.swelltech.com.Toimproveuponthis,local
deliveryonthismachinecouldbedisabled,andincreasedcontrolsoverwhereandtowhommail
shouldbeaccepted.Therearemoreexamplesinthetutorialsectionofthischapter.
Relocated Mapping
Usingthisoption,itispossibletonotifysendersifalocaluserhasmovedtoanotheraddress.
Forexample,ifauserleavesanorganizationbutstillreceivesoccasionalmailatherlocal
address,itmaybeconvenienttonotifyanyonesendingmailtotheuserofthemoveandnew
contactinformationforthatuser.Usageisjustliketheprevioustypesofmappingsandwon’tbe
documentedspecicallyhere,althoughanexampleofarelocatedmappingwillbegiventodisplay
thetypesofinformationthatcanbeprovidedbythisfeature.
Let’ssayImovefrommycurrentcompanytothefarmorerelaxedatmosphereoftheOvalOfce.
Tomakesureallofmyfriendsandclientscankeepintouchwithme,Icouldprovidearelocated
thiswon’tredirectmailtomeatmynewhome,itwillnotifythepeopletryingtocontactmethatI’ve
changedemailaddresses.Hopefullytheywillupdatetheiraddressbooksandresendtheirmailto
thenewaddress.
Local delivery
LocaldeliveryiswhatPostxdoeswhenitreachestheendofitslistofmappingsandaccess
controlsandstillndsthatthemessageisallowedanddestinedforauseronthelocalmachine
(i.e.,amappingcouldpotentiallysendthemessageelsewherefornaldelivery,soallmappings,as
wellasvariousaccesschecks,areperformedbeforereachingthisstage).Thispageconguresa
numberofoptionsrelatingtohowPostxhandlesthedeliveryofmailforlocalusers.
Name of the transport for local deliveries
Thisconguresthenameofthetransportthatwillbeusedfordeliverytoadestinationthatwill
matchthe$mydestinationor$inet_interfacesvariables.Thiscanbeasimplemailboxdrophandled
bythePostxlocaldeliveryagent,oranyappropriatedeliverycommand.Thisoptioncorrelatesto
thelocal_transportdirectiveanddefaultstothedenedtransporttypenamedlocal.
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