Dear Pak Syafril,

Saya menemukan ada suatu domain yang sepertinya servernya banyak yang tidak
memiliki PTR (ada yang memiliki PTR ada yang tidak) yaitu domain otsuka.jp,
sbb :

1.  Pada saat memiliki PTR maka e-mail di terima, sbb :

Mon 2018-03-05 11:32:17.186: 01: ----------
Mon 2018-03-05 11:32:07.323: 05: Session 248308; child 0003
Mon 2018-03-05 11:32:07.323: 05: Accepting SMTP connection from
216.82.243.201:28214 to 192.168.1.19:25
Mon 2018-03-05 11:32:07.324: 03: --> 220 mail.aio.co.id ESMTP MDaemon
15.5.3; Mon, 05 Mar 2018 11:32:07 +0700
Mon 2018-03-05 11:32:07.591: 02: <-- EHLO mail1.bemta8.messagelabs.com
Mon 2018-03-05 11:32:07.323: 05: Session 248308; child 0003
Mon 2018-03-05 11:32:07.323: 05: Accepting SMTP connection from
216.82.243.201:28214 to 192.168.1.19:25
Mon 2018-03-05 11:32:07.324: 03: --> 220 mail.aio.co.id ESMTP MDaemon
15.5.3; Mon, 05 Mar 2018 11:32:07 +0700
Mon 2018-03-05 11:32:07.591: 02: <-- EHLO mail1.bemta8.messagelabs.com
Mon 2018-03-05 11:32:07.591: 03: --> 250-mail.aio.co.id Hello
mail1.bemta8.messagelabs.com, pleased to meet you
Mon 2018-03-05 11:32:07.591: 03: --> 250-ETRN
Mon 2018-03-05 11:32:07.591: 03: --> 250-AUTH LOGIN CRAM-MD5 PLAIN
Mon 2018-03-05 11:32:07.591: 03: --> 250-8BITMIME
Mon 2018-03-05 11:32:07.591: 03: --> 250-ENHANCEDSTATUSCODES
Mon 2018-03-05 11:32:07.591: 03: --> 250 SIZE 51200000
Mon 2018-03-05 11:32:07.845: 02: <-- MAIL FROM:<band...@otsuka.jp>
Mon 2018-03-05 11:32:07.847: 05: Performing PTR lookup
(201.243.82.216.IN-ADDR.ARPA)
Mon 2018-03-05 11:32:08.061: 05: *  D=201.243.82.216.IN-ADDR.ARPA TTL=(112)
PTR=[mail1.bemta8.messagelabs.com]
Mon 2018-03-05 11:32:08.109: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.205]
Mon 2018-03-05 11:32:08.109: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.199]
Mon 2018-03-05 11:32:08.109: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.210]
Mon 2018-03-05 11:32:08.109: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.193]
Mon 2018-03-05 11:32:08.109: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.197]
Mon 2018-03-05 11:32:08.109: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.198]
Mon 2018-03-05 11:32:08.109: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.50]
Mon 2018-03-05 11:32:08.109: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.203]
Mon 2018-03-05 11:32:08.109: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.196]
Mon 2018-03-05 11:32:08.110: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.201]
Mon 2018-03-05 11:32:08.110: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.202]
Mon 2018-03-05 11:32:08.110: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.194]
Mon 2018-03-05 11:32:08.110: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.206]
Mon 2018-03-05 11:32:08.110: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.200]
Mon 2018-03-05 11:32:08.110: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.209]
Mon 2018-03-05 11:32:08.110: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.204]
Mon 2018-03-05 11:32:08.110: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.208]
Mon 2018-03-05 11:32:08.110: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.207]
Mon 2018-03-05 11:32:08.110: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.212]
Mon 2018-03-05 11:32:08.110: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.211]
Mon 2018-03-05 11:32:08.110: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.195]
Mon 2018-03-05 11:32:08.110: 05: ---- End PTR results
Mon 2018-03-05 11:32:08.112: 05: Performing IP lookup
(mail1.bemta8.messagelabs.com)
Mon 2018-03-05 11:32:08.159: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.199]
Mon 2018-03-05 11:32:08.159: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.210]
Mon 2018-03-05 11:32:08.159: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.193]
Mon 2018-03-05 11:32:08.159: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.197]
Mon 2018-03-05 11:32:08.159: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.198]
Mon 2018-03-05 11:32:08.159: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.50]
Mon 2018-03-05 11:32:08.159: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.203]
Mon 2018-03-05 11:32:08.159: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.196]
Mon 2018-03-05 11:32:08.159: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.201]
Mon 2018-03-05 11:32:08.159: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.202]
Mon 2018-03-05 11:32:08.159: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.194]
Mon 2018-03-05 11:32:08.159: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.206]
Mon 2018-03-05 11:32:08.159: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.200]
Mon 2018-03-05 11:32:08.159: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.209]
Mon 2018-03-05 11:32:08.159: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.204]
Mon 2018-03-05 11:32:08.159: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.208]
Mon 2018-03-05 11:32:08.159: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.207]
Mon 2018-03-05 11:32:08.159: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.212]
Mon 2018-03-05 11:32:08.160: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.211]
Mon 2018-03-05 11:32:08.160: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.195]
Mon 2018-03-05 11:32:08.160: 05: *  D=mail1.bemta8.messagelabs.com TTL=(936)
A=[216.82.243.205]
Mon 2018-03-05 11:32:08.160: 05: ---- End IP lookup results
Mon 2018-03-05 11:32:08.162: 05: Performing IP lookup (otsuka.jp)
Mon 2018-03-05 11:32:08.201: 05: *  D=otsuka.jp TTL=(5) A=[202.32.115.14]
Mon 2018-03-05 11:32:08.273: 05: *  P=010 S=000 D=otsuka.jp TTL=(7)
MX=[cluster1.us.messagelabs.com] {216.82.241.243}
Mon 2018-03-05 11:32:08.273: 05: *  P=020 S=001 D=otsuka.jp TTL=(7)
MX=[cluster1a.us.messagelabs.com]
Mon 2018-03-05 11:32:08.445: 05: *  D=cluster1a.us.messagelabs.com TTL=(5)
A=[216.82.251.230]
Mon 2018-03-05 11:32:08.445: 05: ---- End IP lookup results
Mon 2018-03-05 11:32:08.445: 09: Performing SPF lookup (otsuka.jp /
216.82.243.201)
Mon 2018-03-05 11:32:08.855: 09: *  Policy: v=spf1 include:spf.otsuka.jp
include:spf2.otsuka.jp include:spf3.otsuka.jp include:spf4.otsuka.jp
include:spf5.otsuka.jp include:spf-bma.mpme.jp include:spf.ecbeing.co.jp
include:spf.eco-serv.jp ~all
Mon 2018-03-05 11:32:08.855: 09: *  Evaluating include:spf.otsuka.jp:
performing lookup
Mon 2018-03-05 11:32:09.285: 09: *    Policy: v=spf1 ip4:210.254.99.224/28
ip4:58.156.163.96/28 ip4:170.224.177.226/32 ip4:202.32.115.14/32
ip4:124.215.205.48/28 ~all
Mon 2018-03-05 11:32:09.285: 09: *    Evaluating ip4:210.254.99.224/28: no
match
Mon 2018-03-05 11:32:09.285: 09: *    Evaluating ip4:58.156.163.96/28: no
match
Mon 2018-03-05 11:32:09.285: 09: *    Evaluating ip4:170.224.177.226/32: no
match
Mon 2018-03-05 11:32:09.285: 09: *    Evaluating ip4:202.32.115.14/32: no
match
Mon 2018-03-05 11:32:09.285: 09: *    Evaluating ip4:124.215.205.48/28: no
match
Mon 2018-03-05 11:32:09.285: 09: *    Evaluating ~all: match
Mon 2018-03-05 11:32:09.285: 09: *  Evaluating include:spf.otsuka.jp: no
match
Mon 2018-03-05 11:32:09.285: 09: *  Evaluating include:spf2.otsuka.jp:
performing lookup
Mon 2018-03-05 11:32:09.936: 09: *    Policy: v=spf1 ip4:210.188.229.224/27
ip4:210.188.233.32/27 ip4:61.211.238.0/27 ip4:61.211.237.192/26
ip4:59.106.30.0/26 ip4:59.106.100.128/25 ip4:59.106.149.0/26
ip4:59.106.116.96/27 ip4:112.137.190.192/26 ~all
Mon 2018-03-05 11:32:09.936: 09: *    Evaluating ip4:210.188.229.224/27: no
match
Mon 2018-03-05 11:32:09.936: 09: *    Evaluating ip4:210.188.233.32/27: no
match
Mon 2018-03-05 11:32:09.936: 09: *    Evaluating ip4:61.211.238.0/27: no
match
Mon 2018-03-05 11:32:09.936: 09: *    Evaluating ip4:61.211.237.192/26: no
match
Mon 2018-03-05 11:32:09.936: 09: *    Evaluating ip4:59.106.30.0/26: no
match
Mon 2018-03-05 11:32:09.936: 09: *    Evaluating ip4:59.106.100.128/25: no
match
Mon 2018-03-05 11:32:09.936: 09: *    Evaluating ip4:59.106.149.0/26: no
match
Mon 2018-03-05 11:32:09.936: 09: *    Evaluating ip4:59.106.116.96/27: no
match
Mon 2018-03-05 11:32:09.936: 09: *    Evaluating ip4:112.137.190.192/26: no
match
Mon 2018-03-05 11:32:09.936: 09: *    Evaluating ~all: match
Mon 2018-03-05 11:32:09.936: 09: *  Evaluating include:spf2.otsuka.jp: no
match
Mon 2018-03-05 11:32:09.936: 09: *  Evaluating include:spf3.otsuka.jp:
performing lookup
Mon 2018-03-05 11:32:10.441: 09: *    Policy: v=spf1 ip4:112.140.38.192/26
ip4:59.106.106.192/26 ip4:180.214.52.0/24 ip4:112.137.187.128/25
ip4:59.106.117.0/26 ip4:210.188.245.160/27 ip4:59.106.4.0/26
ip4:59.106.4.64/26 ~all
Mon 2018-03-05 11:32:10.441: 09: *    Evaluating ip4:112.140.38.192/26: no
match
Mon 2018-03-05 11:32:10.441: 09: *    Evaluating ip4:59.106.106.192/26: no
match
Mon 2018-03-05 11:32:10.441: 09: *    Evaluating ip4:180.214.52.0/24: no
match
Mon 2018-03-05 11:32:10.441: 09: *    Evaluating ip4:112.137.187.128/25: no
match
Mon 2018-03-05 11:32:10.441: 09: *    Evaluating ip4:59.106.117.0/26: no
match
Mon 2018-03-05 11:32:10.441: 09: *    Evaluating ip4:210.188.245.160/27: no
match
Mon 2018-03-05 11:32:10.441: 09: *    Evaluating ip4:59.106.4.0/26: no match
Mon 2018-03-05 11:32:10.441: 09: *    Evaluating ip4:59.106.4.64/26: no
match
Mon 2018-03-05 11:32:10.441: 09: *    Evaluating ~all: match
Mon 2018-03-05 11:32:10.441: 09: *  Evaluating include:spf3.otsuka.jp: no
match
Mon 2018-03-05 11:32:10.441: 09: *  Evaluating include:spf4.otsuka.jp:
performing lookup
Mon 2018-03-05 11:32:10.986: 09: *    Policy: v=spf1 ip4:216.82.240.0/20
ip4:67.219.240.0/20 ip4:85.158.136.0/21 ip4:95.131.104.0/21
ip4:46.226.48.0/21 ip4:117.120.16.0/21 ip4:193.109.254.0/23
ip4:194.106.220.0/23 ~all
Mon 2018-03-05 11:32:10.986: 09: *    Evaluating ip4:216.82.240.0/20: match
Mon 2018-03-05 11:32:10.986: 09: *  Evaluating include:spf4.otsuka.jp: match
Mon 2018-03-05 11:32:10.986: 09: *  Result: pass
Mon 2018-03-05 11:32:10.986: 09: ---- End SPF results
Mon 2018-03-05 11:32:10.986: 03: --> 250 2.1.0 Sender OK
Mon 2018-03-05 11:32:11.269: 02: <-- RCPT TO:<knak...@aio.co.id>
Mon 2018-03-05 11:32:11.273: 03: --> 250 2.1.5 Recipient OK
Mon 2018-03-05 11:32:11.526: 02: <-- RCPT TO:<ritaw...@aio.co.id>
Mon 2018-03-05 11:32:11.529: 03: --> 250 2.1.5 Recipient OK
Mon 2018-03-05 11:32:11.783: 02: <-- DATA
Mon 2018-03-05 11:32:11.783: 01: Creating temp file (SMTP):
c:\mdaemon\temp\md50000396620.tmp
Mon 2018-03-05 11:32:11.784: 03: --> 354 Enter mail, end with <CRLF>.<CRLF>
Mon 2018-03-05 11:32:12.320: 01: Message size: 15571 bytes
Mon 2018-03-05 11:32:12.323: 10: Performing DKIM lookup
Mon 2018-03-05 11:32:12.323: 10: *  File: c:\mdaemon\temp\md50000396620.tmp
Mon 2018-03-05 11:32:12.323: 10: *  Message-ID:
<d6dcdf32-2a49-48a2-bff1-e3dd1a796...@otsuka.jp>
Mon 2018-03-05 11:32:12.323: 10: *  Result: neutral
Mon 2018-03-05 11:32:12.323: 10: ---- End DKIM results
Mon 2018-03-05 11:32:12.324: 06: Passing message through AntiVirus (Size:
15571)...
Mon 2018-03-05 11:32:12.325: 06: *  Recipient or sender in exclusion list
Mon 2018-03-05 11:32:12.325: 06: ---- End AntiVirus results
Mon 2018-03-05 11:32:12.644: 01: Message creation successful:
c:\mdaemon\inbound\md50016932061.msg
Mon 2018-03-05 11:32:12.644: 03: --> 250 2.6.0 Ok, message saved
<Message-ID: <d6dcdf32-2a49-48a2-bff1-e3dd1a796...@otsuka.jp>>
Mon 2018-03-05 11:32:17.582: 02: <-- QUIT
Mon 2018-03-05 11:32:17.582: 03: --> 221 2.0.0 See ya in cyberspace
Mon 2018-03-05 11:32:17.582: 01: SMTP session successful (Bytes in/out:
15711/482)

====

2. Pada saat tidak memiliki PTR maka e-mail di tolak, sbb :

Mon 2018-03-05 12:09:11.963: 05: Session 251696; child 0010
Mon 2018-03-05 12:09:11.963: 05: Accepting SMTP connection from
216.82.251.15:33501 to 192.168.1.19:25
Mon 2018-03-05 12:09:11.964: 03: --> 220 mail.aio.co.id ESMTP MDaemon
15.5.3; Mon, 05 Mar 2018 12:09:11 +0700
Mon 2018-03-05 12:09:12.245: 02: <-- EHLO mail1.bemta12.messagelabs.com
Mon 2018-03-05 12:09:12.245: 03: --> 250-mail.aio.co.id Hello
mail1.bemta12.messagelabs.com, pleased to meet you
Mon 2018-03-05 12:09:12.245: 03: --> 250-ETRN
Mon 2018-03-05 12:09:12.245: 03: --> 250-AUTH LOGIN CRAM-MD5 PLAIN
Mon 2018-03-05 12:09:12.245: 03: --> 250-8BITMIME
Mon 2018-03-05 12:09:12.245: 03: --> 250-ENHANCEDSTATUSCODES
Mon 2018-03-05 12:09:12.245: 03: --> 250 SIZE 51200000
Mon 2018-03-05 12:09:12.533: 02: <-- MAIL FROM:<band...@otsuka.jp>
Mon 2018-03-05 12:09:12.536: 05: Performing PTR lookup
(15.251.82.216.IN-ADDR.ARPA)
Mon 2018-03-05 12:09:22.880: 04: *  DNS: 10 second wait for DNS response
exceeded (DNS Server: 192.168.9.6)
Mon 2018-03-05 12:09:22.880: 04: *  DNS server reports no valid records for
the requested type found
Mon 2018-03-05 12:09:22.880: 05: *  No PTR records found
Mon 2018-03-05 12:09:22.880: 05: *  MDaemon configured to drop connection
when no PTR records found
Mon 2018-03-05 12:09:22.880: 05: ---- End PTR results
Mon 2018-03-05 12:09:22.880: 03: --> 501 5.7.0 No PTR record found
Mon 2018-03-05 12:09:22.880: 04: SMTP session terminated (Bytes in/out:
67/281)

=====

3. Pada saat tidak memiliki PTR maka e-mail di tolak, sbb :

Mon 2018-03-05 12:52:08.571: 05: Session 254587; child 0003
Mon 2018-03-05 12:52:08.571: 05: Accepting SMTP connection from
216.82.251.10:16929 to 192.168.1.19:25
Mon 2018-03-05 12:52:08.572: 03: --> 220 mail.aio.co.id ESMTP MDaemon
15.5.3; Mon, 05 Mar 2018 12:52:08 +0700
Mon 2018-03-05 12:52:08.828: 02: <-- EHLO mail1.bemta12.messagelabs.com
Mon 2018-03-05 12:52:08.829: 03: --> 250-mail.aio.co.id Hello
mail1.bemta12.messagelabs.com, pleased to meet you
Mon 2018-03-05 12:52:08.829: 03: --> 250-ETRN
Mon 2018-03-05 12:52:08.829: 03: --> 250-AUTH LOGIN CRAM-MD5 PLAIN
Mon 2018-03-05 12:52:08.829: 03: --> 250-8BITMIME
Mon 2018-03-05 12:52:08.829: 03: --> 250-ENHANCEDSTATUSCODES
Mon 2018-03-05 12:52:08.829: 03: --> 250 SIZE 51200000
Mon 2018-03-05 12:52:09.082: 02: <-- MAIL FROM:<band...@otsuka.jp>
Mon 2018-03-05 12:52:09.085: 05: Performing PTR lookup
(10.251.82.216.IN-ADDR.ARPA)
Mon 2018-03-05 12:52:09.567: 04: *  DNS server reports no valid records for
the requested type found
Mon 2018-03-05 12:52:09.567: 05: *  No PTR records found
Mon 2018-03-05 12:52:09.567: 05: *  MDaemon configured to drop connection
when no PTR records found
Mon 2018-03-05 12:52:09.567: 05: ---- End PTR results
Mon 2018-03-05 12:52:09.567: 03: --> 501 5.7.0 No PTR record found
Mon 2018-03-05 12:52:09.567: 04: SMTP session terminated (Bytes in/out:
67/281)

=====

Bagaimana untuk mensiasati hal ini ? mohon pencerahannya, apakah harus saya
daftarkan satu persatu di bagian --> Reverse Lookups --> White list ?


Best Regards,

Slamet Raharjo
IT Dept.




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