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page 108 of 132
ToolVox® X3
Administrator Guide
highloadenvironments,alteringthistoincludebouncenoticationscouldleadtoalargenumberof
notices.
Other General Options
Thelowersectionofthispageisdevotedtoglobaloptionsthatarelesslikelytoneedalteration.In
manyinstallations,theseoptionswillremainattheirdefaults.
Address that receives bcc of each message
Withthisoption,anoptionalemailaddressmaybespeciedtoreceiveacopyofeverymessage
thatentersthePostxsystem,excludinglocallygeneratedbouncemessages.Thiscanrepresent
abreachofprivacyinmanycircumstancesandmaybeillegalinsomecountries.Itisadvisableto
becautiousaboututilizingthisoption.Itcanbeusefulinsomeenvironmentswhereemailarchives
arevaluableforlegalortechnicalreasons.Thisoptioncorrelatestothealways_bccdirectiveand
defaultstonone.
Timeout on handling requests
ThisoptiondetermineshowlongaPostxdaemonwillwaitonarequesttocompletebefore
itassumesthedaemonhaslockedup,atwhichtimethedaemonwillbekilled.Thisoption
correspondstothedaemon_timeoutanddefaultsto18,000seconds.
Default database type
Thisoptiondeterminesthetypeofdatabasetouseinthepostaliasandpostmapcommands,and
correspondstothedefault_database_typedirective.ThedefaultdependsontheOSandinstalled
systemlibrariesatthetimeofbuildingPostx.OrdinarilythiswillbehashordbmonUNIXsystems.
Default message delivery transport
Thetermdelivery transportreferstotheprotocol,orlanguage,usedtodeliverthemessagefrom
onemailservertoanother.Thetransportonmodernsystemsisnearlyalwayssmtp,andthisis
thedefaultinPostx,buttherearestillafewlegacyuucpsystemsinuse.Thisoptionismerelythe
defaultchoicewhennotransportisexplicitlyselectedforthedestinationintheoptionaltransport
table.Thisoptioncorrespondstothedefault_transportdirective.
Sender address for bounce mail
Intheeventamessagedouble-bounces,orrstbouncesfromtherecipientandthenbouncesfrom
thesenderaftertherstbouncenoticeissent,itwillbesenttothisaddress.Allmessageswillbe
silentlydiscarded.Inthisway,bounce-loopscanbeavoided.Thisoptioncorrelatestothedouble_
bounce_senderanddefaultstodouble-bounce.Thenamemaybeanyarbitraryname,butitmust
beunique.
Number of subdir levels below the queue dir
Thisoptionconguresthenumberofsubdirectorylevelsbelowtheconguredqueuedirectoriesthat
willbeusedbyPostxformailstorage.BecauseofthedesignofthetraditionalUNIXlesystem,
whichincludesUFSusedbyallmodernBSDsystemsandtheLinuxext2andext3lesystems,
performancebecomesmeasurablyslowerwhenanextremelylargenumberoflesarestoredin
asingledirectory.Thus,programsthatgeneratealargenumberoflesoftenprovidetheabilityto
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