Dari hasil test saya barusan, yang bermasalah adalah setting SOA DNS yang tidak (lagi) terdaftar di internet sehingga internet node (terkadang) kesulitan (lama) resolve.
$ host -t soa ciputra.co.id ciputra.co.id has SOA record masterdns.ciputra.co.id. root.ciputra.co.id. 20171206 3600 1800 604800 3600 $ host -t a masterdns.ciputra.co.id Host masterdns.ciputra.co.id not found: 3(NXDOMAIN) $ host -t a masterdns.ciputra.co.id ns1.ciputragroup.com Using domain server: Name: ns1.ciputragroup.com Address: 202.51.104.180#53 Aliases: Host masterdns.ciputra.co.id not found: 3(NXDOMAIN) Diperbaiki saja setting Name Server, khususnya SOA DNS nya. Terima kasih bantuannya pak, saya sudah coba perbaiki setting NS nya, dan sepertinya sudah ada peningkatan di waktu penerimaan email. Pertanyaan berikutnya bagaimana mem bypass spf verification dari sender/domain tertentu, karena saya lihat di log cukup memakan waktu juga untuk memproses emailnya (+60 detik utk setiap dns response exceeded). berikut ini contoh log smtp-in nya Wed 2021-02-03 14:15:16.721: [569442] Session 569442; child 0113 Wed 2021-02-03 14:15:16.721: [569442] Accepting SMTP connection from 209.85.160.174:41597 to 172.16.10.10:25 Wed 2021-02-03 14:15:16.722: [569442] --> 220 mail.ciputra.co.id ESMTP MDaemon 17.5.3; Wed, 03 Feb 2021 14:15:16 +0700 Wed 2021-02-03 14:15:16.960: [569442] <-- EHLO mail-qt1-f174.google.com Wed 2021-02-03 14:15:16.961: [569442] Performing SPF lookup (mail-qt1-f174.google.com / 209.85.160.174) Wed 2021-02-03 14:16:16.961: [569442] * DNS: 60 second wait for DNS response exceeded (DNS Server: 8.8.8.8) Wed 2021-02-03 14:17:16.962: [569442] * DNS: 60 second wait for DNS response exceeded (DNS Server: 8.8.4.4) Wed 2021-02-03 14:18:17.055: [569442] * DNS: 60 second wait for DNS response exceeded (DNS Server: 1.1.1.1) Wed 2021-02-03 14:18:47.072: [569442] * Result: none; no SPF record in DNS Wed 2021-02-03 14:18:47.072: [569442] ---- End SPF results Wed 2021-02-03 14:18:47.072: [569442] --> 250-mail.ciputra.co.id Hello mail-qt1-f174.google.com [209.85.160.174], pleased to meet you Wed 2021-02-03 14:18:47.072: [569442] --> 250-ETRN Wed 2021-02-03 14:18:47.072: [569442] --> 250-AUTH LOGIN CRAM-MD5 PLAIN Wed 2021-02-03 14:18:47.072: [569442] --> 250-8BITMIME Wed 2021-02-03 14:18:47.072: [569442] --> 250-ENHANCEDSTATUSCODES Wed 2021-02-03 14:18:47.072: [569442] --> 250-STARTTLS Wed 2021-02-03 14:18:47.072: [569442] --> 250 SIZE 25600000 Wed 2021-02-03 14:18:47.311: [569442] <-- STARTTLS Wed 2021-02-03 14:18:47.311: [569442] --> 220 2.7.0 Ready to start TLS Wed 2021-02-03 14:18:47.793: [569442] SSL negotiation successful (TLS 1.2, 256 bit key exchange, 256 bit AES encryption) Wed 2021-02-03 14:18:48.034: [569442] <-- EHLO mail-qt1-f174.google.com Wed 2021-02-03 14:18:48.034: [569442] Performing SPF lookup (mail-qt1-f174.google.com / 209.85.160.174) Wed 2021-02-03 14:19:48.034: [569442] * DNS: 60 second wait for DNS response exceeded (DNS Server: 8.8.8.8) Wed 2021-02-03 14:19:48.203: [569442] * Result: none; no SPF record in DNS Wed 2021-02-03 14:19:48.203: [569442] ---- End SPF results Wed 2021-02-03 14:19:48.203: [569442] --> 250-mail.ciputra.co.id Hello mail-qt1-f174.google.com [209.85.160.174], pleased to meet you Wed 2021-02-03 14:19:48.203: [569442] --> 250-ETRN Wed 2021-02-03 14:19:48.203: [569442] --> 250-AUTH LOGIN CRAM-MD5 PLAIN Wed 2021-02-03 14:19:48.203: [569442] --> 250-8BITMIME Wed 2021-02-03 14:19:48.203: [569442] --> 250-ENHANCEDSTATUSCODES Wed 2021-02-03 14:19:48.203: [569442] --> 250 SIZE 25600000 Wed 2021-02-03 14:19:48.438: [569442] <-- MAIL FROM:<bonar.gul...@gmail.com> SIZE=2710 Wed 2021-02-03 14:19:48.438: [569442] Performing PTR lookup (174.160.85.209.IN-ADDR.ARPA) Wed 2021-02-03 14:19:48.454: [569442] * D=174.160.85.209.IN-ADDR.ARPA TTL=(328) PTR=[mail-qt1-f174.google.com] Wed 2021-02-03 14:19:48.472: [569442] * D=mail-qt1-f174.google.com TTL=(285) A=[209.85.160.174] Wed 2021-02-03 14:19:48.472: [569442] ---- End PTR results Wed 2021-02-03 14:19:48.472: [569442] Performing IP lookup (mail-qt1-f174.google.com) Wed 2021-02-03 14:19:48.489: [569442] * D=mail-qt1-f174.google.com TTL=(356) A=[209.85.160.174] Wed 2021-02-03 14:19:48.489: [569442] ---- End IP lookup results Wed 2021-02-03 14:19:48.490: [569442] Performing IP lookup (gmail.com) Wed 2021-02-03 14:19:48.506: [569442] * D=gmail.com TTL=(2) A=[172.217.194.19] Wed 2021-02-03 14:19:48.506: [569442] * D=gmail.com TTL=(2) A=[172.217.194.17] Wed 2021-02-03 14:19:48.506: [569442] * D=gmail.com TTL=(2) A=[172.217.194.18] Wed 2021-02-03 14:19:48.506: [569442] * D=gmail.com TTL=(2) A=[172.217.194.83] Wed 2021-02-03 14:19:48.523: [569442] * P=005 S=004 D=gmail.com TTL=(46) MX=[gmail-smtp-in.l.google.com] Wed 2021-02-03 14:19:48.523: [569442] * P=010 S=000 D=gmail.com TTL=(46) MX=[alt1.gmail-smtp-in.l.google.com] Wed 2021-02-03 14:19:48.523: [569442] * P=020 S=001 D=gmail.com TTL=(46) MX=[alt2.gmail-smtp-in.l.google.com] Wed 2021-02-03 14:19:48.523: [569442] * P=030 S=002 D=gmail.com TTL=(46) MX=[alt3.gmail-smtp-in.l.google.com] Wed 2021-02-03 14:19:48.523: [569442] * P=040 S=003 D=gmail.com TTL=(46) MX=[alt4.gmail-smtp-in.l.google.com] Wed 2021-02-03 14:19:48.541: [569442] * D=gmail-smtp-in.l.google.com TTL=(1) A=[74.125.130.27] Wed 2021-02-03 14:19:48.557: [569442] * D=alt1.gmail-smtp-in.l.google.com TTL=(0) A=[74.125.28.27] Wed 2021-02-03 14:19:48.574: [569442] * D=alt2.gmail-smtp-in.l.google.com TTL=(1) A=[74.125.137.27] Wed 2021-02-03 14:19:48.593: [569442] * D=alt3.gmail-smtp-in.l.google.com TTL=(1) A=[173.194.199.27] Wed 2021-02-03 14:19:48.609: [569442] * D=alt4.gmail-smtp-in.l.google.com TTL=(4) A=[209.85.145.27] Wed 2021-02-03 14:19:48.609: [569442] ---- End IP lookup results Wed 2021-02-03 14:19:48.611: [569442] --> 250 2.1.0 Sender OK Wed 2021-02-03 14:19:48.845: [569442] <-- RCPT TO:<bonar.gul...@ciputra.co.id> Wed 2021-02-03 14:19:48.850: [569442] Performing DNS-BL lookup (209.85.160.174 - connecting IP) Wed 2021-02-03 14:19:48.871: [569442] * zen.spamhaus.org - passed Wed 2021-02-03 14:19:48.871: [569442] ---- End DNS-BL results Wed 2021-02-03 14:19:48.873: [569442] --> 250 2.1.5 Recipient OK Wed 2021-02-03 14:19:49.107: [569442] <-- DATA Wed 2021-02-03 14:19:49.108: [569442] Creating temp file (SMTP): d:\mdaemon\queues\temp\md50001432743.tmp Wed 2021-02-03 14:19:49.108: [569442] --> 354 Enter mail, end with <CRLF>.<CRLF> Wed 2021-02-03 14:19:49.347: [569442] Message size: 2710 bytes Wed 2021-02-03 14:19:49.349: [569442] Performing DKIM lookup Wed 2021-02-03 14:19:49.349: [569442] * File: d:\mdaemon\queues\temp\md50001432743.tmp Wed 2021-02-03 14:19:49.349: [569442] * Message-ID: <CAJZr3oROAQoS2-L61Rf9=ihq_0s7f2f-7yyyxkzjxcsofni...@mail.gmail.com> Wed 2021-02-03 14:19:51.048: [569442] * DKIM-Signature 1: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; <some tags are not logged> Wed 2021-02-03 14:19:51.048: [569442] * Verification result: DKIM_SELECTOR_DNS_PERM_FAILURE Wed 2021-02-03 14:19:51.048: [569442] * Result: neutral Wed 2021-02-03 14:19:51.048: [569442] ---- End DKIM results Wed 2021-02-03 14:19:51.058: [569442] Passing message through Spam Filter (Size: 2710)... Wed 2021-02-03 14:19:51.136: [569442] * 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider Wed 2021-02-03 14:19:51.136: [569442] * (bonar.gultom[at]gmail.com) Wed 2021-02-03 14:19:51.136: [569442] * 0.0 HTML_MESSAGE BODY: HTML included in message Wed 2021-02-03 14:19:51.136: [569442] ---- End SpamAssassin results Wed 2021-02-03 14:19:51.136: [569442] Spam Filter score/req: 0.00/10.0 Wed 2021-02-03 14:19:51.375: [569442] Message creation successful: d:\mdaemon\queues\inbound\md50012230487.msg Wed 2021-02-03 14:19:51.375: [569442] --> 250 2.6.0 Ok, message saved <Message-ID: <CAJZr3oROAQoS2-L61Rf9=ihq_0s7f2f-7yyyxkzjxcsofni...@mail.gmail.com>> Wed 2021-02-03 14:19:51.379: [569442] <-- QUIT Wed 2021-02-03 14:19:51.379: [569442] --> 221 2.0.0 See ya in cyberspace Wed 2021-02-03 14:19:51.380: [569442] SMTP session successful (Bytes in/out: 3895/6186) saya sudah mengisi spf exception list dengan isian sbb: *@gmail.com *@google.com *@outlook.com apakah sudah sesuai pak? Terima kasih banyak atas bantuannya. Best Regards, Bonar Gultom -- --[mdaemon-l]---------------------------------------------------------- Milis ini untuk Diskusi antar pengguna MDaemon Mail Server di Indonesia Netiket: https://wiki.openstack.org/wiki/MailingListEtiquette Arsip: http://mdaemon-l.dutaint.com Dokumentasi : http://mdaemon.dutaint.co.id Berlangganan: Kirim mail ke mdaemon-l-subscr...@dutaint.com Henti Langgan: Kirim mail ke mdaemon-l-unsubscr...@dutaint.com Versi terakhir: MDaemon 20.0.3, SecurityGateway 7.0.2