Selamat pagi,

Mohon bantuannya untuk menganalisa SMTP(In) ini.  Email dari sender tidak
bisa masuk.

Thu 2016-10-13 12:49:36.741: 05: [326563] Session 326563; child 0019
Thu 2016-10-13 12:49:36.741: 05: [326563] Accepting SMTP connection from
203.211.152.26:58715 to 192.168.19.2:25
Thu 2016-10-13 12:49:36.742: 03: [326563] --> 220 mail.indokemika.co.id
ESMTP MDaemon 16.0.4; Thu, 13 Oct 2016 12:49:36 +0700
Thu 2016-10-13 12:49:36.770: 02: [326563] <-- EHLO hornet.m1net.com.sg
Thu 2016-10-13 12:49:36.770: 03: [326563] --> 250-mail.indokemika.co.id
Hello hornet.m1net.com.sg [203.211.152.26], pleased to meet you
Thu 2016-10-13 12:49:36.770: 03: [326563] --> 250-ETRN
Thu 2016-10-13 12:49:36.770: 03: [326563] --> 250-AUTH LOGIN CRAM-MD5 PLAIN
Thu 2016-10-13 12:49:36.770: 03: [326563] --> 250-8BITMIME
Thu 2016-10-13 12:49:36.770: 03: [326563] --> 250-ENHANCEDSTATUSCODES
Thu 2016-10-13 12:49:36.770: 03: [326563] --> 250 SIZE 20480000
Thu 2016-10-13 12:49:36.798: 02: [326563] <-- MAIL FROM:<
agus.wiwa...@uiccp.com.sg> SIZE=193978
Thu 2016-10-13 12:49:36.801: 05: [326563] Performing PTR lookup
(26.152.211.203.IN-ADDR.ARPA)
Thu 2016-10-13 12:49:36.806: 05: [326563] *  D=26.152.211.203.in-addr.arpa
TTL=(76) PTR=[hornet.m1net.com.sg]
Thu 2016-10-13 12:49:36.828: 05: [326563] *  D=hornet.m1net.com.sg
TTL=(135) A=[203.211.152.26]
Thu 2016-10-13 12:49:36.828: 05: [326563] ---- End PTR results
Thu 2016-10-13 12:49:36.834: 05: [326563] Performing IP lookup (
hornet.m1net.com.sg)
Thu 2016-10-13 12:49:36.838: 05: [326563] *  D=hornet.m1net.com.sg
TTL=(135) A=[203.211.152.26]
Thu 2016-10-13 12:49:36.838: 05: [326563] ---- End IP lookup results
Thu 2016-10-13 12:49:36.842: 05: [326563] Performing IP lookup (uiccp.com.sg
)
Thu 2016-10-13 12:49:36.870: 05: [326563] *  D=uiccp.com.sg TTL=(0)
A=[210.193.3.166]
Thu 2016-10-13 12:49:36.899: 05: [326563] *  P=010 S=001 D=uiccp.com.sg
TTL=(0) MX=[mxgate.m1net.com.sg]
Thu 2016-10-13 12:49:36.899: 05: [326563] *  P=020 S=000 D=uiccp.com.sg
TTL=(0) MX=[secmx.m1net.com.sg]
Thu 2016-10-13 12:49:36.930: 05: [326563] *  D=mxgate.m1net.com.sg TTL=(4)
A=[203.211.152.95]
Thu 2016-10-13 12:49:36.930: 05: [326563] *  D=mxgate.m1net.com.sg TTL=(4)
A=[210.193.2.96]
Thu 2016-10-13 12:49:36.930: 05: [326563] *  D=mxgate.m1net.com.sg TTL=(4)
A=[210.193.2.95]
Thu 2016-10-13 12:49:36.930: 05: [326563] *  D=mxgate.m1net.com.sg TTL=(4)
A=[203.211.152.96]
Thu 2016-10-13 12:49:36.957: 05: [326563] *  D=secmx.m1net.com.sg TTL=(4)
A=[203.211.152.97]
Thu 2016-10-13 12:49:36.957: 05: [326563] *  D=secmx.m1net.com.sg TTL=(4)
A=[203.211.152.98]
Thu 2016-10-13 12:49:36.957: 05: [326563] *  D=secmx.m1net.com.sg TTL=(4)
A=[210.193.2.98]
Thu 2016-10-13 12:49:36.957: 05: [326563] *  D=secmx.m1net.com.sg TTL=(4)
A=[210.193.2.97]
Thu 2016-10-13 12:49:36.957: 05: [326563] ---- End IP lookup results
Thu 2016-10-13 12:49:36.962: 09: [326563] Performing SPF lookup (
uiccp.com.sg / 203.211.152.26)
Thu 2016-10-13 12:49:36.990: 09: [326563] *  Policy: v=spf1 include:_
spf.m1net.com.sg
Thu 2016-10-13 12:49:36.990: 09: [326563] *  Evaluating include:_
spf.m1net.com.sg: performing lookup
Thu 2016-10-13 12:49:37.016: 09: [326563] *    Policy: v=spf1 mx ip4:
210.193.2.0/23 ip4:203.211.152.0/24 ip6:2001:fc0:1000:1000::/64
ip6:2001:fc0:1000:2000::/64 ~all
Thu 2016-10-13 12:50:37.044: 04: [326563] *  DNS: 60 second wait for DNS
response exceeded (DNS Server: 125.133.31.193)
Thu 2016-10-13 12:51:37.250: 04: [326563] *  DNS: 60 second wait for DNS
response exceeded (DNS Server: 202.158.3.7)
Thu 2016-10-13 12:51:37.280: 09: [326563] *    Evaluating mx: no match -
zero 'mx' type records
Thu 2016-10-13 12:51:37.280: 09: [326563] *    Evaluating ip4:210.193.2.0/23:
no match
Thu 2016-10-13 12:51:37.280: 09: [326563] *    Evaluating ip4:
203.211.152.0/24: match
Thu 2016-10-13 12:51:37.280: 09: [326563] *  Evaluating include:_
spf.m1net.com.sg: match
Thu 2016-10-13 12:51:37.280: 09: [326563] *  Result: pass
Thu 2016-10-13 12:51:37.280: 09: [326563] ---- End SPF results
Thu 2016-10-13 12:51:37.280: 03: [326563] --> 250 2.1.0 Sender OK
Thu 2016-10-13 12:51:37.281: 05: [326563] Connection closed
Thu 2016-10-13 12:51:37.281: 04: [326563] SMTP session terminated (Bytes
in/out: 77/292)

Apakah masalahnya karena SPF? jika mau saya whitelist, bisa tidak?
Bagaimana caranya?

Terima kasih atas bantuannya,
Rusdi

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