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Cellopoint Email UTM FAQ 20110413

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  • CellopointEmailUTMFAQ

    20110413

  • SMTP ................................................................ .... ... ....................................................................................................................................6

    S ct1. MTPTransa ion(SMTP) ......................................................................................................................................6M ea2. ailH der.............................................................................................................................................................................6M3. UA ...........................................................................................................................................................................................6

    .....................4. MTA .......................................................................................................................................................................6CellopointEmailUTM ............................................................................... ..........................................................................................7

    C ...1. ellopointEmailUTMMailGateway .........................................................................................7 ellopointEmailUTMMailReporter ..........2. C .................................................................................7

    ....................3. Cellopoint ...............................................................7CellopointEmailUTMM

    C4. ailGateway ................................................................7

    ellopointEm5. ailUTM .......................................................................................8

    6. ...................................................................................................................................................................8 NTP rver7. CellopointEmailUTM Se .........................................................................................................8

    TMProxy ICA/

    8. CellopointEmailU ................................................................................8ellopointEmai P 9.C lUTMSMT ...............................................................................................8

    10. SerialPortCellopoint ..........................................................................................................................8 ...................................... .............................................................9

    e....................................................................................................................

    1. CellopointEmailUTMC llopointEmailUTMCellopointEmailUTM............................. ....................................................................................9 ellopointEmailUT2. C M .............9C M verInternet .........................3. ellopointEmailUTM ailSer ..........................9Cellopo SMTP 4. intEmailUTM ...............................9 MTPCello ......................................................9

    5. InboundS pointEmailUTM6. AntiVirus CellopointEmailUTM llopoi ailUTM Ce ntEm ..................................................................................................................................9 D ointEmailUTMDHA ............97. HA Cellop ......................................................................

    8. MailServerSMTPCellopointEmailUTM SMTP ........................................................................................................ .................................................................................................................... 10

    9. .................................................................................................................... 10 [ ][] 10. ][ ............................................................................. 10

    ed

    11.LDAPhostfail .......................................................................................................... 10CellopointEmailUTM ................... 1112. ........................................................................................

    13. Didntreceivetheexpectedprotocolmessage.............................................................................................................................................................................................................. 11

    ................................................................................................................................................................................................................ 121. .................................................................................................................... 12

  • 2. ............................................................................................................................................. 12Al

    3. lowSenderIP................................................................................. 12 ...................4. .............................................................................................................................. 12

    5. .............................................................................................................................. 12................................................................................................................................................................................................................ 14

    ........................................................................................................1. ..................................... 14CellopointEmailUTM2. ........................................ 14

    3. ................................................................................................ 14 .................................................................................

    S................................................................................................................................... 15

    ......................1. MTP ............................................................................................................... 15 (S

    2. CellopointEmailUTM marthost) ........................................................................................ 15e/S SmartHost TM

    3. PolicyRout taticRoute/ CellopointEmailU .................................. 15CellopointEmailUTM MailServerSMTP4. timeout ................................................................... 15

    5. [>]ConnectionTimeout..................................................... 16 .................................................................................................................................................................................................................... 17

    CellopointE ............................................1. mailUTM ......................... ................................... 17 Relaying2. tothisemailisnotallowed................................... 173. ........................................................................................................................................ 17

    ...................................4. ........................................................................................................................ 175.CellopointEmailUTM ......................................................................................................................... 17

    CellopointEmailUTMMailReporter ............................................................................................................................................... 20 ........................................................................................1. ........................................................................ 202. ........................................................................ 203. ............................................................................................................................................. 20

    4. ............................................................................................................................................. 20Cellopoint UTMPhra5. Email se................................................................................................ 20 LDAP ...............6. .............................................................................................................................. 20 ............................................................7. .............. .................................................... 20CellopointE8. mailUTMMailReporter ...................................................... 20 .............................................................................................9. ........................................................................ 2110. MailReporter ........................................................................ 21

    .........................11. ...................................................................................................................... 21CellopointRe ntRe ............................................................12. dunda porter ........................................................... 21 ...........................................................13. LDAPGroup ..... 22CellopointEmailUTMReporter 20MB14. ......... 22 .........................15. ........................................................... 22

    .....16. LDAPGroup ........................................................... 2217.CellopointEmailUTMReporter[BCC]............................................................. 23

  • 18. WhiteListWhite ........................ 2319.

    List ..CellopointEmailUTMMailReporter 1........................... 23

    ........................................................................................................................................................................................................... 25 ......................................................................................... 251. ........ ...................................................................................

    2. CelloOS3.9.5SRL_GoodIP................................................................................................................................ ....................................................................................... 253. ....................................................................................... 25 ......................... ................................... 64. ......................................... ............... ............... 2

    5. "YouhavereceivedaneCard" 100KBiso8859zip ..........................................................................................................................

    e ................................................ 26

    mail6. ................................................... 26/User ......................................................................7. ............................... ................................ 27XMailer:DreamMail .................................. 278.

    9. ................................ ..........................

    Cell............................................................................ .... .................................................................................. 28

    opointEmailUTM P.................. ..................... 2810. I ................................................11. InternetCellopointEmailUTM

    .................................................................................................................................................BCC

    ........................................................ 29 (12. ) ......................................................... 29

    13. SRL_BadIP...................................................................................................................................................... 29....................................................................................................................................................... . 30...................................................

    1. Excel CellopointEmailUTM ...... ........................... .............................................. 30

    C ......................................................................................................................... ..........2. ellopointEmailUTMMailReporterSMTPUser ......................................................... ..................................................................... 30 .............................................

    3. ReporterSMTPAuthentication ................................................................. 31 ..................................................................................

    4. InternetUserCellopointEmailUTMSMTPAuth............................ ............................................................................................................................

    C ............................................... ........ 32

    ellopointEmailUTMCellopointEmailUTM............. 325.6. SMTP

    .......................... ................................ .........................S

    .................................... ............................................... 32 MTPconnection ilUTM7. CellopointEma .... 33 CellopointEmailUTM ..8. .................. 35

    Ta TaSe

    9. g g ....................... 35 nderverificationf ........................................... 3510. ailed

    11. CellopointEmailUTMCellopointEmailUTMMailServer............................................................................................................................................................................................................................ 35

  • 12.CellopointRelay ..................................................................................................................... 36

  • SMTP

    1.SM tion(SMTP)TPTransac

    (SMTPClient)(SMTPServer) SMTP SMTP SMTP(SMTPTransaction) SMTPCommand ArgumentSMTPCommand Command ArgumentSMTPTransaction(EHLOMAILFROMRCPTTO..)

    2.MailHeader

    Body() Header()MailHeaderEnvelopFrom(ReturnPath)HeaderFrom()HeaderTo()Subject()Date()MTA Header Header HeaderOutlookExpress [>>]

    3.MUA

    MUA MailUserAgent( Header Body) MUA OutlookExpressNetscapeMessengerEudoraMozillaMailMicrosoftOutlook MUA

    4.MTA

    MTA MailTransferAgent MUA MTA CellopointExchangeNotesSendmailPostfix MTA MUA( OutlookExpress)MTA(

  • CellopointEmailUTM

    1.Cellopoi GatewayntEmailUTMMail

    llopointEmailUTM /admin Cettp://192.168.1.1/adminh CellopointEmailUTMMailGateway

    2. Cellopoin eportertEmailUTMMailR

    CellopointEmailUTMttp://192.168.1.1h CellopointEmailUTMMailReporter

    3.C ellopoint

    CellopointEmailUTMMailGateway MailGateway[/admin>>]

    4.C MMailGatewa ellopointEmailUT y

    CellopointEmailUTM 9 P TP MTPSMT CellopointEmailUTMSM S C mailUTMPOP POPPOP ellopointE POP Journaling Journaling Exchange/DominoNotes

    rnal Jou S/MIME CellopointEmailUTMS/MIME S/MIME

    SMTP POP CellopointEmailUTMCellopointEmailUTM

    30 CellopointEmailUTM

    MailReporterCellopointEmailUTM MailReporter MailReporter

    MailReporter MailReporter MailReporter

  • Sophos Sophos Sophos

    5. Cellopoin tEmailUTM

    CellopointEmailUTMMailGateway [>Web>] EMail

    0() 1800

    6.

    CellopointEmailUTMMailGateway [>Web>] 4

    7. CellopointE mailUTM NTPServer

    CellopointEmailUTMMailGateway [>>/> NTP] NTP

    0()5 5 NTP

    8. CellopointE xy mailUTM Pro ICA/

    CellopointEmailUTM Internet ICA(ProxyServer) CellopointEmailUTMMailGateway [>Proxy> Proxy]

    9.CellopointEmailUTMSMTP

    CellopointEmailUTMLicense console

    10. Cel SerialPort lopoint

    ointEmailUTM RS23 Cellop 2 nullmodem PC com Cel opointEmailUTM coml115200bau abits,noparity,1stopbitsandnoflowcontrol.drate,8dat ncyemergeemergency

  • 1. CellopointEmailUTM CellopointEmailUTM

    CellopointEmailUTM

    CellopointEmailUTM(LocalMailDomain)

    2. CellopointEmailUTM

    CellopointEmailUTMMailGateway [ >>>](@)

    3. Cellopo Internet intEmailUTM MailServer

    CellopointEmailUTMMailGateway [>>] MailServerIP

    4. CellopointE mailUTM SMTP

    CellopointEmailUTMMailGateway [>SMTP>> SMTP]

    SMTP Relay

    5. SMTP Ce ilUTM Inbound llopointEma

    DNSMXrecord SMTPPort25 CellopointEmailUTM

    6. AntiVirus CellopointEmailUTM

    mailUTM CellopointE

    CellopointEmailUTM AntiVirus [>> IP] IP

    7. Cel HA DHA lopointEmailUTM D

    DHA DirectoryHarvestAttack,DHA

    [email protected] [email protected]

  • CellopointEmailUTM [] [>SMTP>>> N][ N]

    8.MailServer SMTP CellopointEmailUTM

    SMTP

    CellopointEmailUTMMailGateway [> DoS> DoS] [] IP1 CellopointEmailUTM 5 SMTP CellopointEmailUTM 30

    s( m( )h )d 3 ) ( ( ) s()m()h()d() 3

    9.

    CellopointEmailUTMMailGateway [>>]

    10. ][] [][

    CellopointEmailUTM [] CellopointEmailUTM []

    11. LDAPhostfailed

    Alertfromhos name.domain:ip_addressLDAPhostfailedtap_simple_bind_failed(0)timeoutld LDAP LDAP CellopointEmailUTM MailGateway LDAP CellopointEmailUTM

  • LDAP

    12. opointEmailUTMCell

    Cello mailUTM

    om TO pointE

    1)example.c RCPT RCPTTO2)test.com

    example.com 3)) LDAP4 [email protected] 134 [email protected] 1 34 [email protected] 24

    13. Didntreceivetheexpectedprotocol

    message

    Cellopoint 5 [] IP11312 5 5 [/admin>>SMTP>>> N ]

  • 1.

    CellopointEmailUTMMailGateway [>()> ] IP

    2.

    MailServerIP [>>] CellopointEmailUT ailS er M M erv

    MailServer [> ()> >] [>()>>]

    3. wSend rIP Allo e

    IP [Gateway>>>]CellopointEmailUTM Relay(Internet/Intranet) Antispam()

    CellopointEmailUTMRelay IP

    4.

    Cellopoint MailGateway > > > >/ [] []

    5.

    CellopointEmailUTMGateway[]>[()]>[] CellopointEmailUTMReporter[]>[]

  • @example.com ple.comexam .com @gmail ahoo.comaaa@y www hsu@ admin

  • 1.

    CellopointEmailUTM(Policy)

    2. CellopointEmailUTM

    3.

    CellopointEmailUTM

  • 1. SMTP

    CellopointEmailUTMMailGateway [>SMTP>>]

    2. Cell marthost)opointEmailUTM(S

    CellopointEmailUTMMailGateway [>>] SmartHost

    martHost=192.168.1.1S SmartHost( 192.168.1.1)

    3. olicyRoute/StaticRoute/SmartHostCellopointEmailUTM P

    PolicyRoute

    StaticRoute IP

    SmartHost SmartHost

    CellopointEmailUTMPolicyRoute>StaticRoute>SmartHost

    4.CellopointEmailUTM MailServer SMTP timeout

    CellopointEmailUTM SMTPConnection

    idle Timeout MailGateway SMTPCommand:DATA idle

    connectionclose300 CellopointEmailUTM

  • CiscoAdaptiveSecurityAppliancesASA

    SMTPinspection EmailUTM SMTP

    5.[>] ConnectionTimeout

    CellopointEmailUTM[SMTP>>]( 5) ConnectionTimeout

    CellopointEmailUTM[SMTP>>]

    ConnectionTimeout [MailRouting]

    CellopointEmailUTM[SMTP>>]

  • 1. mailUTM CellopointE

    CellopointEmailUTM SMTPTransactionLogCellopointEmailUTM CellopointEmailUTM 250181690bytesreceived:676618133

    2. Relayingtothi ailisnotallowedsem

    CellopointEmailUTM IP SMTPCellopointEmailUTM Internet MUA

    3.

    CellopointEmailUTMMailGateway [>]

    4.

    CellopointEmailUTMMailGateway [>]

    5.CellopointEmail

    CellopointEmailUTM[][]

    UTM

    [ ] [ ] [][][]

    CellopointEmailUTM [email protected]

    Gatew Mail ay [ >][][]

    [email protected]

    [13:54:57][192.168.1.118:55186][C]mailfrom:[email protected] [13:54:57][192.168.1.118:55186][S]250SenderOk

  • 192.168.1.118:55186

    [13:54:51][192.168.1.118:55186]srl:0.600

    hread=1[13:54:51][192.168.1.118:55186]main:smtpt[13:54:53][192.168.1.118:55186][C]heloxx

    .7Build1110 [13:54:53][192.168.1.118:55186][S]250CellopointEmailFirewallv3.9[13:54:57][192.168.1.118:55186][C]mailfrom:[email protected]

    main>Ok [13:54:57][192.168.1.118:55186][S]250Sender

  • delivery,test01 QUEUED

    601,Deferred:Connectionrefusedbyexample.com

    2011011813:55:17,INBOUND,[email protected](192.168.1.118),[email protected](192.168.1.192example.com),731134790,232,QUEUED,601,Deferred:Connectionrefusedbyexample.com

    DELIVERED QUEUED RETURNED

    []

    2011011814:12:29,INBOUND,[email protected](209.85.161.171),[email protected](21.7.11.15mail.com.tw),1669448764,21928092,RETURNED,552,5.3.4Messagesizeexceedsfixedmaximummessagesize,3938yw

    CelloOS3.9.7 MailGateway> > []

  • CellopointEmailUTMMailReporter

    1.

    CellopointEmailUTMMailReporter [>>]

    2.

    [>>] [] CellopointEmailUTMMailReporter []

    3.

    [>>>]

    4.

    CellopointEmailUTMMailReporter [> ]

    5.Cel o ase l pointEmailUTM Phr

    CellopointEmailUTMMailReporter []

    6. LDAP

    CellopointEmailUTMMailReporter [> ] LDAP

    7.

    CellopointEmailUTMMailReporter []

    8. CellopointEmailUTMMailReporter

    CellopointEmailUTMMailReporter [

  • ] Reporter

    9.

    CellopointEmailUTMMailReporter [>] CellopointEmailUTMMailReporter

    10. eporterMailR

    MailReporter

    11.

    [>] CellopointEmailUTMMailReporter 90 30 60

    12. rterCellopointRedundantRepo

    ellopointRedundantReporterC ActivMailGateway eReporter ActiveReporter RedundantReporter

    Ac tiveReporter ActivMailGateway eReporter MailGateway RedundantReporter

    Ac tiveReporter rterMailGateway ActiveRepo RedundantReMailGateway porter ReduActiveReporter ndantReporter RedundantReporter ActiveReporter

    /

  • 13. LDAP Group

    CellopointEmailUTMLDAP GroupGroup Group [Reporter>>> LDAP] LDAP LDAP

    BaseDN Group:: Group (objectcalss=group) n%c %cn %mail

    14. CellopointEmailUTMReporter 20MB

    CellopointEmailUTMReporter 20MB

    [>>> (5/10/20/50/100)MB ]

    20MBellopointEmailUTMC sendmail sendmail.cf OMaxMessageSize=20000000 Postfix main.cf message_size_limit=20000000

    15.

    llopointEmailUTMMailRepor er : Ce t [> UI>] CelloOS3.9.5

    16. LDAP Group

    CellopointEmailUTMLDAP Grouproup GroupG [Reporter>>> LDAP] LDAP LDAP

  • BaseDN Group:: Group (objectcalss=group) n%c %cn %mail

    17.CellopointEmai [BCC]lUTMReporter

    BCC BlindCarbonCopy BCC Reporter[BCC] envelopefrom headerfrom[BCC]

    BCC bcc:bcc:[email protected]

    18.WhiteListWhite List

    IP [Gateway >]WhiteList(IP) >> ddress) EMAIL [Gatew y>>>]WhiteList(A a

    WhiteList Email [Reporter>][/]

    19. CellopointEmailUTMMailReporter 1

    CellopointEmailUTMMailReporter[>] 95%CellopointEmailUTMMailReporter CellopointEmailUTMMailReporter

    CellopointEmailUTMMailReporter CellopointEmailUTMMailReporter

    10 CellopointEmailUTMMailReporter

    95%CellopointEmailUTMMailReporter

    90 10 95% 70

  • 10CellopointEmailUTMMailReporter

  • 1.

    CellopointEmailUTM:

    :

    reason=11204>reason=21201> User

    "" ""

    2. CelloOS3.9.5SRL_GoodIP

    CelloOS3.9.5 IP SRL_GoodIP

    IP

    IP

    IP IP SMTPRelay IPellopointC BypassSRL_GoodIP 0.0.0.0/0.0.0.0()

    [>] bypass:SRL_GoodIP

    3.

    charset charset koi8r

    ?28zBy8/CzM/LyQ==?=Subject:=?koi8r?BMIMEVersion:1.0ContentType:text/plain;

  • charset=koi8rontentTransferEncoding:8bitCoi8rk

    "( eader oi8r )header/*.charset="koi8\r H k ext/*.charset="koi8\r"( Data koi8r)t email

    4.

    [][] [ ][][][][/] email

    5."YouhavereceivedaneCard" 100KB

    iso8859 zip

    receivedeCard receivedeCard

    00KB evp/size>100KB1 ip.zip z iso885 text/*.charset=iso\8859\19

    receivedeCa rd 100KB zip iso8859

    6. email

    CellopointEmailUTM(Policy)

  • 0.0.0.0/0.0.0.0() [>] ()

    replace:text/html,href=,hrefxxx= HTMLhref= hrefxxx===

    Userreplace:text/html,src=,srcxxx= HTMLsrc=

    srcxxx=

    replace:text/html,http://,httpxxx:// http Outlook

    replace:application/octetstream,http:,httpxxx:

    binary http: httpxxx:http

    replace:application/octetstream,src=,srcxxx=

    binary src= srcxxx=

    7

    ./User

    (Policy) User

    )reason=11204 ( reason=21201 ( User)

    8. ailXMailer:DreamM

    XMailer:DreamMail()(Policy)

  • header/xmailer=iDreamMail ( i )

    9.

    meta__at _exe( exe)t

    text/plain.charset="iso\8859\1"text/plain.charset=i"Windows\1252"( i)

    [>]

    10. CellopointEmailUT IPM

    IP CellopointEmailUTM IP [>> IP> IP] IP

    IP 192.168.1.10 IP 192.168.1.11( IP) IP

    IP [>] IP 192.168.1.11

    epaper.cef.example om .c [>]

    192.168.1.11 IP LinkLoadBalancer 192.168.1.11 IP

  • 11. Internet CellopointEmailUTM

    (MailPolicy)

    5MB)image/*>5MB ( video/*>5MB ( 5MB)

    ] [ > [ ] > 1213 1213 12

    13

    12. B )CC(

    (MailPolicy)

    evp/bcc>0 ( BCC 0) [][]

    13. SRL_BadIP

    SRL_BadIP 0.0.0.0/0.0.0.0() [>]

    bypass:SRL_BadIP

  • 1. Excel Cellopoint

    mailUTME

    Microsoft:

    zhtw;830302http://support.microsoft.com/default.aspx?scid=kb;ttp://support.microsoft.com/kb/290809/ZHTW/h MicrosoftOutlook RTFTNEF Outlook OutlookExpress winmail.dat

    HTML TNEF ] [] ] [ [ [] [] [HTML] []

    2. CellopointEmailUTMMailReporter SMTP User

    Spammer CellopointEmailUTM SMTPAuth. [Gateway(admin)>> Dos>] 5m 10 30m( 5CellopointEmailUTM 10 30)

    0s CellopointEmailUTM

    2 [Gateway(admin)>>Web>] email

    1800 [Gateway(admin)>> Dos]DoS

  • 3. Reporter SMTPAuthentication

    [>SMTP>> XUser]CellopointEmailUTMXUser

    User CellopointEmailUTM ReceivedHeader ID

    llopoint.comReceived:fromxxx[(192.168.1.117)]bymailgw.ce

    envelopefrom)(CellopointEmailUTM_177_25)(withES l200910:15:05+0800MTPid1233990947;Thu,16Ju mailgw int.com xxx ID.cellopo 1233990947

    IP.Source_Port ID gateway[10:15:05][192.168.1.117.1343][S]msgid=1233990947mod=010:15:22][192.168.1.117.1343][S]25045bytesreceived:1233990947[ IP.Source_Port( 192.168.1.117.1343) gateway

    hread=1[10:14:44][192.168.1.117.1343]main:smtpt[10:14:46][192.168.1.117.1343][C]ehloxxx

    ointEmailUTM_177_25[10:14:46][192.168.1.117.1343][S]250Cellop[10:14:49][192.168.1.117.1343][C]authlogin

    m5hbWU6[10:14:49][192.168.1.117.1343][S]334VXNlc[10:14:50][192.168.1.117.1343][C]dXNlcjE=

    dvcmQ6[10:14:50][192.168.1.117.1343][S]334UGFzc3[10:14:50][192.168.1.117.1343][C]XXXXXXXX

    92.168.1.35port110[10:14:50][192.168.1.117.1343][P]connectto1[10:14:50][192.168.1.117.1343][P]USERuser1

    XXXXXXX[10:14:50][192.168.1.117.1343][P]PASSX[10:14:50][192.168.1.117.1343][P]QUIT[10:14:50][192.168.1.117.1343][S]235Authenticationsuccessful( User1)

    [email protected][10:14:58][192.168.1.117.1343][C]mailfrom:user[10:14:58][192.168.1.117.1343][S]250SenderOk

    gmail.com[10:15:04][192.168.1.117.1343][C]rcptto:liaoyuankai@[10:15:04][192.168.1.117.1343]rate_cache:inbound0[10:15:04][192.168.1.117.1343]smtp_connect:connectingto192.168.1.35(192.168.1.35)port25

  • ... Gateway[>SMTP]

    I

    .

    4. nternetUserCellopointEmailUTMSMTPAuth.

    Hacker SMTPAuth.Spammer SMTPAuth. [Gateway(admin)>>

    DoS] IP 1h 5 12h( 1 512)

    5. CellopointEmailUTM CellopointEmailUTM

    CellopointEmailUTM EnvelopeSenderAddress EnvelopeSenderddress HeaderSenderAddressA MailServer BATV EnvelopeSenderAddressTag [email protected]

    HeaderSenderAddress [email protected] [email protected] CellopointEmailUTMnvelopeSenderAddressECellopointEmailUTMHeaderSenderAddress [Gateway(admin)>>SMTP>>] CellopointmailUTM HeaderSenderAddressE [] HeaderSenderAddress

    6. SMTP

    n)> DoS ] DoS. [Gateway(admi > [Gateway(admin)>> DoS>]

  • user1 1s 0 1s

    DataCellopointEmailUTM 452Toomanyessagessentbythesameaccountm

    7. SMTPconnection CellopointEmailUTM

    CellopointEmailUTM SMTPconnection EHLO MMAILFRO TORCPT DATA

    RESET DATA DATA

    ([C][S]) netcef.mail.gatew tel ay25 RCPTTOCellopointEmailUTMReporter

    ewallv3.9.5Build0723ready[S]220CellopointEMailFir [C]ehlomail.cellopoint.com

    wallv3.9.5Build0723ready[S]250CellpointEmailFirePLAINLOGIN[S]250AUTH

    [S]250SIZETIME[S]2508BIT

    [S]250DSNRTTLS[S]250STA

    [S]250OK

    [C]mailfrom:[email protected][S]250Sender

    [C]rcptto:user1@ex[S]250RecipientOK

    ample.com

    RCPTTO

  • [C]datawith.[S]354OkSenddataending

    ubject:emailtesting#1[C]S[C][C]Hello,[C]Thisisatestemail

    leaseignore,Thanks[C]P[C].

    5bytesreceived:1781580578[S]2505

    DATA.()

    [C]quit[S]221Ok

    RCPTTOCellopointEmailUTMReporter

    ewallv3.9.5Build0723ready[S]220CellopointEMailFir

    [C]ehlomail.cellopoint.comwallv3.9.5Build0723ready[S]250CellpointEmailFire

    PLAINLOGIN[S]250AUTH[S]250SIZE

    TIME[S]2508BIT[S]250DSN

    RTTLS[S]250STA[S]250OK

    [C]mailfrom:[email protected][S]250Sender

    [C]rcptto:[email protected][S]250RecipientOK

    ample.com[C]rcptto:user2@execipientOK[S]250R

    RCPTTO

    [C]datawith.[S]354OkSenddataending

    ubject:emailtesting#1[C]S[C][C]Hello,[C]Thisisatestemail

    leaseignore,Thanks[C]P[C].[S]25055bytesreceived:1781580578

    DATA.()

  • [C]quit[S]221Ok

    CellopointEmailUTMReporter MailServer

    8. CellopointEmailUTM

    FA Q To:[email protected] CellopointEmailUTMReporter

    To:[email protected];[email protected] CellopointEmail

    UTMReporter To:[email protected]:[email protected]

    CellopointEmailUTMReporter

    T9. agTag

    10. Senderverificati iled

    11. ilUTM

    Tag

    onfa

    CellopointEmailUTM CellopointEmailUTM CellopointEmailUTM DNS

    MAILFROM CellopointEmailUTM 5xxAmessagethatyousentcouldnotbedeliveredtooneormoreofitsrecipientsThisisapermanenterror.Thefollowingaddress(es)failed:>>>[email protected](afterMAILFROM):553Senderverificationfailed

    CellopointEmailUTM CellopointEma

  • MailServer

    CellopointEmailUTM [>>> IP] [>()>>> IP ]

    12.Cellopoint Relay

    >> ] [

    MailServer ( Smarthost Relayhost) MicrosoftExchange2000

    Exchange [ ]>[EXCHANGE]>[ ]>[SMTP] [SMTP][] CellopointEmailUTM Exchange [ ] SMTPCellopointEmailUTM[]

    LotusDominoR5 Domino Configuration>Messaging>MessagingSettings CellopointEmailUTM[Relayhostformessagesleavingthelocalinternetdomain]

    Sendmail sendmail.cf()DSrelay.example.com(DS relay.example.com relay)

    Qmail ( )/var/qmail/control/smtproutes :relay.example.com(relay.example.com CellopointEmailUTM)

    Postfix main.cf ( ) relayhost=[abc.domain.name]( postfix)

    Relay

    SMTP [> >]

    Gateway RELAY

    [Gateway >/

  • IP] [(Domain)] [Gateway > >SMTP > ] [ SMTP]

    IP/

    [ >SMTP ] SMTP /

    game / IP

    85.137.173.32[2010120412:51:58]AUTH_POP3,OK,85.137.173.32.2847,192.168.1.189.25,game,INBOUND[2010120412:52:01]AUTH_POP3,OK,85.137.173.32.2845,192.168.1.189.25,game,INBOUND[2010120412:52:11]AUTH_POP3,OK,85.137.173.32.2851,192.168.1.189.25,game,INBOUND[2010120412:52:15]AUTH_POP3,OK,85.137.173.32.2863,192.168.1.189.25,game,INBOUND[2010120412:52:15]AUTH_POP3,OK,85.137.173.32.2859,192.168.1.189.25,game,INBOUND[2010120412:52:29]AUTH_POP3,OK,85.137.173.32.2873,192.168.1.189.25,game,INBOUND[2010120412:52:29]AUTH_POP3,OK,85.137.173.32.2865,192.168.1.189.25,game,INBOUND[2010120412:52:30]AUTH_POP3,OK,85.137.173.32.2877,192.168.1.189.25,game,INBOUND[2010120412:52:35]AUTH_POP3,OK,85.137.173.32.2879,192.168.1.189.25,game,INBOUND

    1. SMTP Transaction(SMTP)2. Mail Header3. MUA4. MTA1. Cellopoint E-mail UTM Mail Gateway3. Cellopoint4. Internet UserCellopoint E-mail UTMSMTP Auth.9. TagTag