>Kalau posting topik baru selalu gunakan menu "compose new mail" agar
>terbentuk thread (utas) baru, bukan pakai reply yang akan meneruskan
>thread yang lama.
Ok, Noted Pak.

>Ini masalah DNS resolver yang digunakan server mail.ciputra.co.id yang
>tidak bisa resolve domain hotelciputra.com.
>Perbaiki/ganti DNS resolver yang digunakan atau tambahkan public DNS
>resolver

Maaf pak mau klarifikasi, untuk log sebelumnya berasal dari mail server 
hotelciputra.com
Berikut ini log dari mailserver kami (mail.ciputra.co.id) untuk transaksi email 
yang sama

Tue 2022-05-10 12:13:59.730: 05: [014414] Session 014414; child 0003
Tue 2022-05-10 12:13:59.730: 05: [014414] Accepting SMTP connection from 
222.165.222.202:61468 to 172.16.10.10:25
Tue 2022-05-10 12:13:59.730: 03: [014414] --> 220 mail.ciputra.co.id ESMTP 
MDaemon 17.5.3; Tue, 10 May 2022 12:13:59 +0700
Tue 2022-05-10 12:13:59.739: 02: [014414] <-- EHLO mail.hotelciputra.com
Tue 2022-05-10 12:13:59.741: 09: [014414] Performing SPF lookup 
(mail.hotelciputra.com / 222.165.222.202)
Tue 2022-05-10 12:14:00.188: 09: [014414] *  Result: none; no SPF record in DNS
Tue 2022-05-10 12:14:00.188: 09: [014414] ---- End SPF results
Tue 2022-05-10 12:14:00.188: 03: [014414] --> 250-mail.ciputra.co.id Hello 
mail.hotelciputra.com [222.165.222.202], pleased to meet you
Tue 2022-05-10 12:14:00.188: 03: [014414] --> 250-ETRN
Tue 2022-05-10 12:14:00.188: 03: [014414] --> 250-AUTH LOGIN CRAM-MD5 PLAIN
Tue 2022-05-10 12:14:00.188: 03: [014414] --> 250-8BITMIME
Tue 2022-05-10 12:14:00.188: 03: [014414] --> 250-ENHANCEDSTATUSCODES
Tue 2022-05-10 12:14:00.188: 03: [014414] --> 250-STARTTLS
Tue 2022-05-10 12:14:00.188: 03: [014414] --> 250 SIZE 25600000
Tue 2022-05-10 12:14:00.202: 02: [014414] <-- STARTTLS
Tue 2022-05-10 12:14:00.202: 03: [014414] --> 220 2.7.0 Ready to start TLS
Tue 2022-05-10 12:14:00.255: 01: [014414] SSL negotiation successful (TLS 1.2, 
384 bit key exchange, 256 bit AES encryption)
Tue 2022-05-10 12:14:00.271: 02: [014414] <-- EHLO mail.hotelciputra.com
Tue 2022-05-10 12:14:00.274: 09: [014414] Performing SPF lookup 
(mail.hotelciputra.com / 222.165.222.202)
Tue 2022-05-10 12:14:00.292: 09: [014414] *  Result: none; no SPF record in DNS
Tue 2022-05-10 12:14:00.292: 09: [014414] ---- End SPF results
Tue 2022-05-10 12:14:00.292: 03: [014414] --> 250-mail.ciputra.co.id Hello 
mail.hotelciputra.com [222.165.222.202], pleased to meet you
Tue 2022-05-10 12:14:00.292: 03: [014414] --> 250-ETRN
Tue 2022-05-10 12:14:00.292: 03: [014414] --> 250-AUTH LOGIN CRAM-MD5 PLAIN
Tue 2022-05-10 12:14:00.292: 03: [014414] --> 250-8BITMIME
Tue 2022-05-10 12:14:00.292: 03: [014414] --> 250-ENHANCEDSTATUSCODES
Tue 2022-05-10 12:14:00.292: 03: [014414] --> 250 SIZE 25600000
Tue 2022-05-10 12:14:00.301: 02: [014414] <-- MAIL 
From:<[email protected]> SIZE=968596
Tue 2022-05-10 12:14:00.305: 05: [014414] Performing PTR lookup 
(202.222.165.222.IN-ADDR.ARPA)
Tue 2022-05-10 12:14:00.312: 05: [014414] *  D=202.222.165.222.IN-ADDR.ARPA 
TTL=(1167) PTR=[mail.hotelciputra.com]
Tue 2022-05-10 12:14:00.313: 05: [014414] *  D=mail.hotelciputra.com TTL=(60) 
A=[203.190.55.122]
Tue 2022-05-10 12:14:00.313: 05: [014414] *  MDaemon configured to drop 
connection on PTR record mismatch
Tue 2022-05-10 12:14:00.313: 05: [014414] ---- End PTR results
Tue 2022-05-10 12:14:00.313: 03: [014414] --> 501 5.7.0 Domain must resolve
Tue 2022-05-10 12:14:00.314: 04: [014414] SMTP session terminated (Bytes 
in/out: 696/5920)

apakah issue di DNS yang kami gunakan pak, karena di log di atas ada pesan 
MDaemon configured to drop connection on PTR record mismatch

Terima kasih.

Best Regards,

Bonar Gultom




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