Pak Syafril, 
Error dibawah ini, host nya tidak bisa diresolve bagaimana mengatasinya?

Fri 2019-07-05 13:57:46.993: 05: [404372] Session 404372; child 0014
Fri 2019-07-05 13:57:46.993: 05: [404372] Accepting SMTP connection from
118.97.98.67:37814 to 10.0.0.109:25
Fri 2019-07-05 13:57:46.994: 03: [404372] --> 220 mail.clipan.co.id ESMTP
MDaemon 17.0.2; Fri, 05 Jul 2019 13:57:46 +0700
Fri 2019-07-05 13:57:47.089: 02: [404372] <-- EHLO pmg01.saranaonline.com
Fri 2019-07-05 13:57:47.096: 03: [404372] --> 250-mail.clipan.co.id Hello
pmg01.saranaonline.com [118.97.98.67], pleased to meet you
Fri 2019-07-05 13:57:47.096: 03: [404372] --> 250-ETRN
Fri 2019-07-05 13:57:47.096: 03: [404372] --> 250-AUTH LOGIN CRAM-MD5 PLAIN
Fri 2019-07-05 13:57:47.096: 03: [404372] --> 250-8BITMIME
Fri 2019-07-05 13:57:47.096: 03: [404372] --> 250-ENHANCEDSTATUSCODES
Fri 2019-07-05 13:57:47.096: 03: [404372] --> 250-STARTTLS
Fri 2019-07-05 13:57:47.096: 03: [404372] --> 250 SIZE 30720000
Fri 2019-07-05 13:57:47.202: 02: [404372] <-- STARTTLS
Fri 2019-07-05 13:57:47.203: 03: [404372] --> 220 2.7.0 Ready to start TLS
Fri 2019-07-05 13:57:47.386: 01: [404372] SSL negotiation successful (TLS
1.2, 2048 bit key exchange, 128 bit  encryption)
Fri 2019-07-05 13:57:47.473: 02: [404372] <-- EHLO pmg01.saranaonline.com
Fri 2019-07-05 13:57:47.474: 03: [404372] --> 250-mail.clipan.co.id Hello
pmg01.saranaonline.com [118.97.98.67], pleased to meet you
Fri 2019-07-05 13:57:47.474: 03: [404372] --> 250-ETRN
Fri 2019-07-05 13:57:47.474: 03: [404372] --> 250-AUTH LOGIN CRAM-MD5 PLAIN
Fri 2019-07-05 13:57:47.474: 03: [404372] --> 250-8BITMIME
Fri 2019-07-05 13:57:47.474: 03: [404372] --> 250-ENHANCEDSTATUSCODES
Fri 2019-07-05 13:57:47.474: 03: [404372] --> 250 SIZE 30720000
Fri 2019-07-05 13:57:49.997: 02: [404372] <-- MAIL
FROM:<[email protected]> SIZE=657541 BODY=8BITMIME
Fri 2019-07-05 13:57:50.000: 05: [404372] Performing PTR lookup
(67.98.97.118.IN-ADDR.ARPA)
Fri 2019-07-05 13:57:50.021: 05: [404372] *  D=67.98.97.118.IN-ADDR.ARPA
TTL=(1159) PTR=[zmbr.saranaonline.com]
Fri 2019-07-05 13:57:50.059: 05: [404372] *  D=zmbr.saranaonline.com TTL=(5)
A=[118.97.98.67]
Fri 2019-07-05 13:57:50.059: 05: [404372] ---- End PTR results
Fri 2019-07-05 13:57:50.062: 05: [404372] Performing IP lookup
(pmg01.saranaonline.com)
Fri 2019-07-05 13:57:50.179: 04: [404372] *  DNS server reports domain name
unknown
Fri 2019-07-05 13:57:50.179: 05: [404372] ---- End IP lookup results
Fri 2019-07-05 13:57:50.181: 03: [404372] --> 501 5.7.0
pmg01.saranaonline.com host can't be resolved
Fri 2019-07-05 13:57:50.183: 04: [404372] SMTP session terminated (Bytes
in/out: 1100/1783)
Terima kasih


Regards,
Seno Hartono








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