Dear Pak Syafril,
Mohon bantuannya untuk update PTR record dengan error spt beriktu:

Tue 2015-09-15 06:18:19: ----------
Tue 2015-09-15 06:25:38: [530210] Session 530210; child 0001
Tue 2015-09-15 06:25:38: [530210] Accepting SMTP connection from 
[173.248.136.247:49319] to [121.58.186.20:25]
Tue 2015-09-15 06:25:38: [530210] --> 220 mail.atletcentury.com ESMTP MDaemon 
14.0.0; Tue, 15 Sep 2015 06:25:38 +0700
Tue 2015-09-15 06:25:38: [530210] <-- EHLO HV18ACCU3999.maxialhost.com
Tue 2015-09-15 06:25:38: [530210] --> 250-mail.atletcentury.com Hello 
HV18ACCU3999.maxialhost.com, pleased to meet you
Tue 2015-09-15 06:25:38: [530210] --> 250-ETRN
Tue 2015-09-15 06:25:38: [530210] --> 250-AUTH LOGIN CRAM-MD5 PLAIN
Tue 2015-09-15 06:25:38: [530210] --> 250-8BITMIME
Tue 2015-09-15 06:25:38: [530210] --> 250 SIZE
Tue 2015-09-15 06:25:38: [530210] <-- MAIL FROM:<[email protected]> 
SIZE=211678
Tue 2015-09-15 06:25:38: [530210] Performing PTR lookup 
(247.136.248.173.IN-ADDR.ARPA)
Tue 2015-09-15 06:25:39: [530210] *  Error: *  Name server reports domain name 
unknown
Tue 2015-09-15 06:25:39: [530210] *  MDaemon configured to drop connection when 
domain name unknown
Tue 2015-09-15 06:25:39: [530210] ---- End PTR results
Tue 2015-09-15 06:25:39: [530210] --> 501 Connecting IP must have valid PTR 
record for 173.248.136.247
Tue 2015-09-15 06:25:39: [530210] SMTP session terminated (Bytes in/out: 82/294)
Tue 2015-09-15 06:25:39: ----------
Terima kasih atas bantuannya.

Salam,
Ali

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