Dear Pak Syafril,

Saya baru saya beli domain baru kapal-api.com untuk testing-testing, saya
sudah setup dns record dan email dari public (gmail) sudah berhasil masuk.
Namun pada saat saya kirim email keluar itu tidak berhasil,

Berilut log smtp.out nya


Sat 2025-03-15 04:34:09.900: 01: ----------
Sat 2025-03-15 04:34:17.839: 01: [49202565] REMOTE message:
pd3501009371689.msg
Sat 2025-03-15 04:34:17.839: 01: [49202565] *  Session 49202565; child 0001
Sat 2025-03-15 04:34:17.839: 01: [49202565] *  From:
asep.yuliy...@kapall-api.com
Sat 2025-03-15 04:34:17.839: 01: [49202565] *  To: asepyuliy...@gmail.com
Sat 2025-03-15 04:34:17.839: 01: [49202565] *  Subject: test
Sat 2025-03-15 04:34:17.839: 01: [49202565] *  Message-ID:
<wc20250314213416.610...@kapall-api.com>
Sat 2025-03-15 04:34:17.839: 01: [49202565] *  Size: 2591;
<d:\mdaemon\queues\remote\pd3501009371689.msg>
Sat 2025-03-15 04:34:17.843: 05: [49202565] Attempting to send message to
smart host
Sat 2025-03-15 04:34:17.843: 05: [49202565] Attempting SMTP connection to
172.30.30.100:25
Sat 2025-03-15 04:34:17.843: 05: [49202565] Waiting for socket connection...
Sat 2025-03-15 04:34:17.844: 05: [49202565] *  Connection established
172.30.2.2:49523 --> 172.30.30.100:25
Sat 2025-03-15 04:34:17.844: 05: [49202565] Waiting for protocol to start...
Sat 2025-03-15 04:34:17.846: 02: [49202565] <-- 220 mx1.kapalapi.co.id ESMTP
Sat 2025-03-15 04:34:17.846: 03: [49202565] --> EHLO
mail.fastratabuana.co.id
Sat 2025-03-15 04:34:17.847: 02: [49202565] <-- 250-mx1.kapalapi.co.id
Sat 2025-03-15 04:34:17.847: 02: [49202565] <-- 250-8BITMIME
Sat 2025-03-15 04:34:17.847: 02: [49202565] <-- 250 SIZE 262144000
Sat 2025-03-15 04:34:17.847: 03: [49202565] --> MAIL
From:<asep.yuliy...@kapall-api.com> SIZE=2591
Sat 2025-03-15 04:34:17.851: 02: [49202565] <-- 250 sender
<asep.yuliy...@kapall-api.com> ok
Sat 2025-03-15 04:34:17.851: 03: [49202565] --> RCPT
To:<asepyuliy...@gmail.com>
Sat 2025-03-15 04:34:17.852: 02: [49202565] <-- 250 recipient
<asepyuliy...@gmail.com> ok
Sat 2025-03-15 04:34:17.852: 03: [49202565] --> DATA
Sat 2025-03-15 04:34:17.855: 02: [49202565] <-- 354 go ahead
Sat 2025-03-15 04:34:17.855: 01: [49202565] Sending
<d:\mdaemon\queues\remote\pd3501009371689.msg> to [172.30.30.100]
Sat 2025-03-15 04:34:17.855: 01: [49202565] Transfer Complete
Sat 2025-03-15 04:34:18.349: 02: [49202565] <-- 554 Your access to this mail
system has been rejected due to poor reputation of a domain used in message
transfer
Sat 2025-03-15 04:34:18.350: 03: [49202565] --> QUIT
Sat 2025-03-15 04:34:18.363: 21: [49202565] Creating delivery failure DSN...
Sat 2025-03-15 04:34:18.363: 21: [49202565] *  Recipient:
asep.yuliy...@kapall-api.com
Sat 2025-03-15 04:34:18.363: 21: [49202565] *  Session-ID: 49202565
Sat 2025-03-15 04:34:18.363: 21: [49202565] *  Queue-ID: pd3501009371689.msg
Sat 2025-03-15 04:34:18.363: 21: [49202565] *  Message-ID:
wc20250314213416.610...@kapall-api.com
Sat 2025-03-15 04:34:18.363: 21: [49202565] --- End DSN message creation
Sat 2025-03-15 04:34:18.363: 02: [49202565] <-- 221 mx1.kapalapi.co.id
Sat 2025-03-15 04:34:18.363: 04: [49202565] SMTP session terminated (Bytes
in/out: 330/2725)
Sat 2025-03-15 04:34:18.363: 01: ----------

Mohon masukannya pak kira-kira penyebabnya dmn ya?
Saya cek reputasi domain ini juga masih hijau.

Terimakasih,
Asep. Y


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