dear Mr. Syafril & Team,

Pada hari sabtu kemarin (29/08/2015) hasil tangkapan dari Mail SMTP(in) adalah 
sebagai berikut:
Sat 2015-08-29 17:49:43.791: ----------
Sat 2015-08-29 17:50:08.672: Session 501964; child 0001
Sat 2015-08-29 17:50:08.672: Accepting SMTP connection from 193.94.173.77:58628 
to 10.0.1.60:25
Sat 2015-08-29 17:50:08.673: --> 220 mail.bintangsaudara.com ESMTP MDaemon 
15.0.3; Sat, 29 Aug 2015 17:50:08 +0700
Sat 2015-08-29 17:50:09.009: <-- EHLO fsmsg.planmeca.com
Sat 2015-08-29 17:50:09.011: --> 250-mail.bintangsaudara.com Hello 
fsmsg.planmeca.com, pleased to meet you
Sat 2015-08-29 17:50:09.011: --> 250-ETRN
Sat 2015-08-29 17:50:09.011: --> 250-AUTH LOGIN CRAM-MD5 PLAIN
Sat 2015-08-29 17:50:09.011: --> 250-8BITMIME
Sat 2015-08-29 17:50:09.011: --> 250-ENHANCEDSTATUSCODES
Sat 2015-08-29 17:50:09.011: --> 250-STARTTLS
Sat 2015-08-29 17:50:09.011: --> 250 SIZE
Sat 2015-08-29 17:50:09.369: <-- STARTTLS
Sat 2015-08-29 17:50:09.369: --> 220 2.7.0 Ready to start TLS
Sat 2015-08-29 17:50:10.037: SSL negotiation successful (TLS 1.2, 1536 bit key 
exchange, 128 bit AES encryption)
Sat 2015-08-29 17:50:10.368: <-- EHLO fsmsg.planmeca.com
Sat 2015-08-29 17:50:10.369: --> 250-mail.bintangsaudara.com Hello 
fsmsg.planmeca.com, pleased to meet you
Sat 2015-08-29 17:50:10.369: --> 250-ETRN
Sat 2015-08-29 17:50:10.369: --> 250-AUTH LOGIN CRAM-MD5 PLAIN
Sat 2015-08-29 17:50:10.369: --> 250-8BITMIME
Sat 2015-08-29 17:50:10.369: --> 250-ENHANCEDSTATUSCODES
Sat 2015-08-29 17:50:10.369: --> 250 SIZE
Sat 2015-08-29 17:50:10.697: <-- MAIL From:<[email protected]> SIZE=19539
Sat 2015-08-29 17:50:10.701: Performing PTR lookup (77.173.94.193.IN-ADDR.ARPA)
Sat 2015-08-29 17:50:11.123: *  D=77.173.94.193.IN-ADDR.ARPA TTL=(240) 
PTR=[fsmsg.planmeca.com]
Sat 2015-08-29 17:50:11.133: *  D=fsmsg.planmeca.com TTL=(120) A=[193.94.173.77]
Sat 2015-08-29 17:50:11.133: ---- End PTR results
Sat 2015-08-29 17:50:11.136: Performing IP lookup (fsmsg.planmeca.com)
Sat 2015-08-29 17:50:11.145: *  D=fsmsg.planmeca.com TTL=(120) A=[193.94.173.77]
Sat 2015-08-29 17:50:11.145: ---- End IP lookup results
Sat 2015-08-29 17:50:11.150: Performing IP lookup (planmeca.com)
Sat 2015-08-29 17:50:11.436: *  D=planmeca.com TTL=(1440) A=[193.94.173.73]
Sat 2015-08-29 17:50:11.445: *  P=005 S=001 D=planmeca.com TTL=(119) 
MX=[fsmsg.planmeca.com]
Sat 2015-08-29 17:50:11.445: *  P=010 S=000 D=planmeca.com TTL=(119) 
MX=[mailcenter.planmeca.com]
Sat 2015-08-29 17:50:11.450: *  D=fsmsg.planmeca.com TTL=(120) A=[193.94.173.77]
Sat 2015-08-29 17:50:11.450: ---- End IP lookup results
Sat 2015-08-29 17:50:11.452: Performing SPF lookup (planmeca.com / 
193.94.173.77)
Sat 2015-08-29 17:50:12.019: *  Result: none; no SPF record in DNS
Sat 2015-08-29 17:50:12.019: ---- End SPF results
Sat 2015-08-29 17:50:12.019: --> 250 2.1.0 Sender OK
Sat 2015-08-29 17:50:12.350: <-- RCPT To:<[email protected]>
Sat 2015-08-29 17:50:12.354: Performing DNS-BL lookup (193.94.173.77 - 
connecting IP)
Sat 2015-08-29 17:50:12.592: *  zen.spamhaus.org - passed
Sat 2015-08-29 17:50:12.592: ---- End DNS-BL results
Sat 2015-08-29 17:50:12.593: --> 250 2.1.5 Recipient OK
Sat 2015-08-29 17:50:12.928: <-- RCPT To:<[email protected]>
Sat 2015-08-29 17:50:12.932: --> 250 2.1.5 Recipient OK
Sat 2015-08-29 17:50:13.261: <-- RCPT To:<[email protected]>
Sat 2015-08-29 17:50:13.264: --> 250 2.1.5 Recipient OK
Sat 2015-08-29 17:50:13.595: <-- RCPT To:<[email protected]>
Sat 2015-08-29 17:50:13.599: --> 250 2.1.5 Recipient OK
Sat 2015-08-29 17:50:13.927: <-- RCPT To:<[email protected]>
Sat 2015-08-29 17:50:13.928: More than 5 RCPT commands encountered; this 
session tarpitted with a 10 second initial delay scaling by 1.00
Sat 2015-08-29 17:50:13.932: --> 250 2.1.5 Recipient OK
Sat 2015-08-29 17:50:24.263: <-- DATA
Sat 2015-08-29 17:50:24.263: Creating temp file (SMTP): 
c:\mdaemon\queues\temp\md50000001182.tmp
Sat 2015-08-29 17:50:24.263: --> 354 Enter mail, end with <CRLF>.<CRLF>
Sat 2015-08-29 17:50:24.931: Message size: 19933 bytes
Sat 2015-08-29 17:50:24.932: Performing DKIM lookup
Sat 2015-08-29 17:50:24.932: *  File: c:\mdaemon\queues\temp\md50000001182.tmp
Sat 2015-08-29 17:50:24.932: *  Message-ID: 
<E81A7E517252E6438BC136309E7ED6B3010C6A6FA57C@SRVFIHKIEXB01.pmgroup.local>
Sat 2015-08-29 17:50:25.225: *  Result: neutral
Sat 2015-08-29 17:50:25.225: ---- End DKIM results
Sat 2015-08-29 17:50:25.230: Performing DMARC processing
Sat 2015-08-29 17:50:25.230: *  File: c:\mdaemon\queues\temp\md50000001182.tmp
Sat 2015-08-29 17:50:25.230: *  Message-ID: 
<E81A7E517252E6438BC136309E7ED6B3010C6A6FA57C@SRVFIHKIEXB01.pmgroup.local>
Sat 2015-08-29 17:50:25.230: *  Author domain: planmeca.com
Sat 2015-08-29 17:50:25.230: *  Organizational domain: planmeca.com
Sat 2015-08-29 17:50:25.230: *  Query domain: _dmarc.planmeca.com
Sat 2015-08-29 17:50:25.527: *    No DMARC policy record found
Sat 2015-08-29 17:50:25.527: *  Action taken: none
Sat 2015-08-29 17:50:25.527: *  Result: none
Sat 2015-08-29 17:50:25.527: ---- End DMARC results
Sat 2015-08-29 17:50:25.527: Passing message through AntiVirus (Size: 19933)...
Sat 2015-08-29 17:50:25.552: *  Message is clean (no viruses found)
Sat 2015-08-29 17:50:25.552: ---- End AntiVirus results
Sat 2015-08-29 17:50:25.888: Message creation successful: 
c:\mdaemon\queues\inbound\md50000025293.msg
Sat 2015-08-29 17:50:25.888: --> 250 2.6.0 Ok, message saved <Message-ID: 
<E81A7E517252E6438BC136309E7ED6B3010C6A6FA57C@SRVFIHKIEXB01.pmgroup.local>>
Sat 2015-08-29 17:50:25.894: <-- QUIT
Sat 2015-08-29 17:50:25.894: --> 221 2.0.0 See ya in cyberspace
Sat 2015-08-29 17:50:25.895: SMTP session successful (Bytes in/out: 21741/2398)

Namun Hari ini terjadi kegagalan saat PTR lookup.
Mon 2015-08-31 09:54:56.268: Session 508176; child 0002
Mon 2015-08-31 09:54:56.268: Accepting SMTP connection from 193.94.173.77:43383 
to 10.0.1.60:25
Mon 2015-08-31 09:54:56.272: --> 220 mail.bintangsaudara.com ESMTP MDaemon 
15.0.3; Mon, 31 Aug 2015 09:54:56 +0700
Mon 2015-08-31 09:54:56.667: <-- EHLO fsmsg.planmeca.com
Mon 2015-08-31 09:54:56.670: --> 250-mail.bintangsaudara.com Hello 
fsmsg.planmeca.com, pleased to meet you
Mon 2015-08-31 09:54:56.670: --> 250-ETRN
Mon 2015-08-31 09:54:56.670: --> 250-AUTH LOGIN CRAM-MD5 PLAIN
Mon 2015-08-31 09:54:56.670: --> 250-8BITMIME
Mon 2015-08-31 09:54:56.670: --> 250-ENHANCEDSTATUSCODES
Mon 2015-08-31 09:54:56.670: --> 250-STARTTLS
Mon 2015-08-31 09:54:56.670: --> 250 SIZE
Mon 2015-08-31 09:54:57.137: <-- STARTTLS
Mon 2015-08-31 09:54:57.137: --> 220 2.7.0 Ready to start TLS
Mon 2015-08-31 09:54:58.083: SSL negotiation successful (TLS 1.2, 1536 bit key 
exchange, 128 bit AES encryption)
Mon 2015-08-31 09:54:58.557: <-- EHLO fsmsg.planmeca.com
Mon 2015-08-31 09:54:58.558: --> 250-mail.bintangsaudara.com Hello 
fsmsg.planmeca.com, pleased to meet you
Mon 2015-08-31 09:54:58.558: --> 250-ETRN
Mon 2015-08-31 09:54:58.558: --> 250-AUTH LOGIN CRAM-MD5 PLAIN
Mon 2015-08-31 09:54:58.558: --> 250-8BITMIME
Mon 2015-08-31 09:54:58.558: --> 250-ENHANCEDSTATUSCODES
Mon 2015-08-31 09:54:58.558: --> 250 SIZE
Mon 2015-08-31 09:54:58.924: <-- MAIL From:<[email protected]> SIZE=13081
Mon 2015-08-31 09:54:58.928: Performing PTR lookup (77.173.94.193.IN-ADDR.ARPA)
Mon 2015-08-31 09:54:59.194: *  DNS server reports that it is having technical 
problems
Mon 2015-08-31 09:54:59.194: *  No PTR records found
Mon 2015-08-31 09:54:59.194: *  MDaemon configured to drop connection when no 
PTR records found
Mon 2015-08-31 09:54:59.194: ---- End PTR results
Mon 2015-08-31 09:54:59.194: --> 501 5.7.0 No PTR record found
Mon 2015-08-31 09:54:59.195: SMTP session terminated (Bytes in/out: 764/1590)

Hal ini menyebabkan rekanan kami tidak dapat mengirimkan email. kenapa bisa 
terjadi hal demikian(PTR lookup nya gagal)?kemudian apakah ada solusi agar 
mereka dapat mengirimkan pesan kepada kami? Terima Kasih.

Regards,

Sucipto
-- 
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