Code-blue TOOLVOX X3 Bedienungsanleitung PDF herunterladen (Seite 122)

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page 122 of 132

ToolVox® X3

Administrator Guide

optioncorrelatestothesmtpd_bannerdirectiveandcontains$myhostnameESMTP$mail_nameby

default.

Note

 AproposedfederallawintheU.S.wouldmakeitillegaltosendunsolicitedcommercial

 emailthroughamailserveriftheserverincludedinitsSMTPgreetingthewordsNOUCE.

Max number of recipients accepted for delivery

Thisoptionlimitsthenumberofrecipientsthatmaybespeciedinasinglemessageheader.It

isusuallyrareforlegitimatemessagestohaveanextremelylargenumberofrecipientsspecied

inasinglemessageheader,butitisoftendoneinUCEmessages.Thelegitimateexceptionis

messagestoamailinglist,possiblysentbymailinglistsoftwarelikemajordomoormailman.This

optioncorrelatestothesmtpd_recipient_limitanddefaultsto1000.

Disable SMTP VRFY command

Normally,theSMTPVRFYcommandisusedtoverifytheexistenceofaparticularuser.However,it

isalsoillegitimatelyusedbyspammerstoharvestliveemailaddresses.Thus,itissometimesuseful

todisablethiscommand.Thisoptioncorrelatestodisable_vrfy_commandanddefaultstoNo.

Timeout in seconds for SMTP transactions

ThisoptionsetsthetimeoutforaclienttorespondtotheSMTPserversresponsewithanSMTP

request.Theconnectionprocessinvolvestheclientopeningaconnectiontotheserver,theserver

replyingwithagreetingandtheclientmakingitsrequest.Iftheclientrequestdoesnotcomewithin

thetimespeciedhere,theconnectionwillbeclosed.Thisoptioncorrelatestotheopts_smtpd_

timeoutdirectiveanddefaultsto300seconds.

Timeout before sending 4xx/5xx error response

Whensendinganerrorresponsetoaclient,theserverwillsleepforaspeciedtime.Thepurpose

ofthisfeatureistopreventcertainbuggyclientsfromhittingtheserverwithrepeatedrequestsin

rapidsuccession.Thisoptioncorrelatestothesmtpd_error_sleep_timedirectiveanddefaultsto5

seconds.

Error count for temporarily ignore a client

ThisoptionconguresthenumberoferrorsthataclientmaygeneratebeforePostxwillstop

respondingtorequestsforaspeciedtime.Somebuggymailclientsmaysendalargenumberof

requests,whileignoringorrespondingincorrectlytotheerrormessagesthatresult.Postxattempts

tominimizetheimpactofthesebuggyclientsonnormalservice.Thisoptioncorrelatestothe

smtpd_soft_error_limitanddefaultsto10.

Error count for closing connection

Ifthenumberexceedsthislimit,theconnectionwillbeclosed.Thisoptioncorrelatestothesmtpd_

hard_error_limitanddefaultsto100.

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