Code-blue TOOLVOX X3 Bedienungsanleitung PDF herunterladen (Seite 131)

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ToolVox® X3

Administrator Guide

Fortherstoption,youwilllikelywanttoselectUsedomainnameinordertoselectthedomain

nameofyourserverasthesourceofemailsentfromit.Forexample,ifmymailserverisnamed

mail.swelltech.comandIselectedthisoption,mailwillappeartooriginatefromswelltech.com.

Thesecondoptionspeciesthedomainsforwhichyouwillreceiveemail.Thedefaultisprobably

toorestrictiveinthatitwillonlypermitreceiptofmailto$mydomainnameandlocalhost.$mydomain,

ortheserveritself.Whilethisdependsonyourenvironmentandneeds,itislikelyyouwillwantto

addthe$mydomainvariabletothelistofaccepteddomains.

ThelaststeptomakingPostxfullyfunctionalforsendingandreceivingmailistoensuretheLocal

networksparameterissetappropriately.Ifyouonlyhaveonenetworkblock,thiswillalready

besetappropriately,asthedefaultistoacceptmailfordeliveryfromallattachednetworks(i.e.,

allconguredandactivenetworkaddresses).However,ifyouhaveapublicandprivatenetwork

interface,you’lllikelywanttoremovetothepublicinterfacetopreventotherclientsofyourISPfrom

beingabletorelaymailthroughyourserver.

ClicktheSave and Applybuttontomakeyourchangestakeeffect.Itisagoodideatotestyour

changestomakesurethingsareworkingasintended.AssuminganappropriateDNSMXrecord

hasalreadybeencongured,asdiscussedintheBINDtutorials,youcansendyourselfanemailat

thenewdomain.WatchthemaillogintheSystem Logsmoduleforerrorsandtoseeifthemessage

isdelivered.Next,congureyourmailclienttosendthroughyournewmailservertoensureit

isworkingforsendingmail.Themaillogwilllikelygivecluesaboutwhatiswrongintheeventof

problems.

Tutorial: Virtual Hosting email with Postﬁx

Ifyou’veperformedthecongurationintheprevioustutorial,you’llbeabletoacceptmailforany

numberofdomains.However,thisisnotthesameasprovidingindependentvirtualhostingsupport

withPostx.Youcanonlyhaveoneuserofagivennameandmailsenttothatusernameatany

ofthedomainsforwhichyouacceptmailwillbedelivered.Forexample,ifyouhostedswelltech.

com,penguinfeet.organdnostarch.comonthesameserver,andmailwassenttouserjoeateach

ofthosedomains,allthreewouldendupinthesamemailbox.Therefore,youhavetointroduce

anotherlayertosolvethisproblem.

Postxhastwocommonlyusedmethods.TherstisthenativePostxmethod,usingavirtualtable

todirectmailtothecorrectdestination.ThesecondmethodismodeledafterthewaySendmail

handlestheproblemandisalotmorecomplex.Becausesimplicityisbetterthancomplexity,you’ll

learnthenativePostxmechanismexclusively.ThePostxvirtualmanpagecoversbothmethods

inmoderatedetail.IfyouhaveanolderSendmailinstallationthatisbeingconvertedtoPostx,you

maywishtousethesecondmethodandmaintainyourcurrentvirtualmailconguration.Ifyouwill

berunninganextremelylargenumberofvirtualdomains,itislikelypreferabletousethesecond

method,aswell.

TherststepforsettingupvirtualdomaindeliveryistocreateavirtualmaptableusingtheVirtual

Domainspage.Enterthemaptype(hash,dbm,etc.),followedbythelenameoftheatlethat

willcontainthetableinformation.Forexample,youcoulduse/etc/postx/virtualforthispurpose.

Thisisaprettycommonlocationforthisle.

Saveandapplythechange,andreturntotheVirtual Domainspage.ClicktheNew mapping

button.Yoursthavetocreateagenericmapforthenewdomain.FortheNameeld,enteryour

virtualdomainname.IntheMaps to...eld,youcantechnicallyenteranythingyoulike(aslongas

weentersomething).Thecustomseemstobetoenter“virtual”inthiseld,asthatisitspurpose.

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