> 
> >> Besar dugaan, koneksinya di interrupt oleh anti-virus software (yang ada
> di sisi sender).
> 
> > Hal ini dari sisi user pengirim infonya,  hanya kirim ke mail kami saja yang
> bermasalah
> >
> > Apakah hal ini IP kami yang bermasalah 202.72.214.166  terblacklist,
> sehingga antivirus dari mereka memblok pengiriman email kearah IP kami..?
> 
> 
> Antivirus real time scanning terpicu oleh isi (content dan lampiran)
> dari Email, bukan blocking tetapi filtering.
> 
> Mestinya sih ada setting di AV nya untuk whitelist/exclude scanning jika
> destinationnya IP/host tertentu.
> 


Dari sisi sender  hanya terdapat LOG seperti ini

2026-08-27T14:12:17.048673+07:00 mx2 sendmail[1445906]: 67R73MiN1437539: 
to=<[email protected]>,<[email protected]>,<[email protected]>,
 delay=00:00:32, xdelay=00:00:32, mailer=esmtp, tls_verify=NONE, 
tls_version=NONE, cipher=NONE, 
envid=izKShmdHq3kHmHJVd1CLGmG548_BuDDV+202026-08-27T14:11:44.456564+2B0700, 
pri=2559076, relay=mail.koreainvestment.co.id. [202.72.214.166], dsn=4.4.2, 
stat=Deferred: Connection reset by mail.koreainvestment.co.id.

2026-08-27T14:55:27.414994+07:00 mx2 sendmail[1486278]: 67R7K0nL1453645: 
to=<[email protected]>, delay=00:19:52, xdelay=00:00:04, 
mailer=esmtp, tls_verify=NONE, tls_version=NONE, cipher=NONE, 
envid=XFv3Jn6sGHnh9bXDlM_0c4nEW_C5-36x+202026-08-27T14:35:34.622105+2B0700, 
pri=2637323, relay=mail.koreainvestment.co.id. [202.72.214.166], dsn=5.7.1, 
reply=554 5.7.1 This email from IP 182.23.38.243 has been rejected. The email 
message was detected as spam., stat=Service unavailable



Sedangkan di Sisi Kami di Mdaemon LOG nya seperti ini

Thu 2026-08-27 14:40:30.126: [07623784] Session 07623784; child 0001
Thu 2026-08-27 14:40:30.126: [07623784] Accepting SMTP connection from 
182.23.38.243:44811 to 192.168.19.3:25
Thu 2026-08-27 14:40:30.128: [07623784] --> 220 mail.koreainvestment.co.id 
ESMTP MDaemon 25.5.2; Thu, 27 Aug 2026 14:40:30 +0700
Thu 2026-08-27 14:40:30.295: [07623784] <-- EHLO mx2.hanabank.co.id
Thu 2026-08-27 14:40:30.296: [07623784] --> 250-mail.koreainvestment.co.id 
Hello mx2.hanabank.co.id [182.23.38.243], pleased to meet you
Thu 2026-08-27 14:40:30.296: [07623784] --> 250-ETRN
Thu 2026-08-27 14:40:30.296: [07623784] --> 250-8BITMIME
Thu 2026-08-27 14:40:30.296: [07623784] --> 250-ENHANCEDSTATUSCODES
Thu 2026-08-27 14:40:30.296: [07623784] --> 250-PIPELINING
Thu 2026-08-27 14:40:30.296: [07623784] --> 250-CHUNKING
Thu 2026-08-27 14:40:30.296: [07623784] --> 250 SIZE 51937280
Thu 2026-08-27 14:40:30.339: [07623784] <-- MAIL 
From:<[email protected]> SIZE=2319296
Thu 2026-08-27 14:40:30.339: [07623784] --> 250 2.1.0 Sender OK
Thu 2026-08-27 14:40:30.350: [07623784] <-- RCPT 
To:<[email protected]>
Thu 2026-08-27 14:40:30.356: [07623784] --> 250 2.1.5 Recipient OK
Thu 2026-08-27 14:40:30.360: [07623784] <-- RCPT To:<[email protected]>
Thu 2026-08-27 14:40:30.367: [07623784] --> 250 2.1.5 Recipient OK
Thu 2026-08-27 14:40:30.371: [07623784] <-- RCPT To:<[email protected]>
Thu 2026-08-27 14:40:30.375: [07623784] --> 250 2.1.5 Recipient OK
Thu 2026-08-27 14:40:30.379: [07623784] <-- RCPT 
To:<[email protected]>
Thu 2026-08-27 14:40:30.383: [07623784] --> 250 2.1.5 Recipient OK
Thu 2026-08-27 14:40:30.387: [07623784] <-- RCPT 
To:<[email protected]>
Thu 2026-08-27 14:40:30.391: [07623784] --> 250 2.1.5 Recipient OK
Thu 2026-08-27 14:40:32.476: [07623784] <-- RSET
Thu 2026-08-27 14:40:32.477: [07623784] --> 250 2.0.0 RSET? Well, OK
Thu 2026-08-27 14:40:33.737: [07623784] <-- QUIT
Thu 2026-08-27 14:40:33.737: [07623784] --> 221 2.0.0 See ya in cyberspace
Thu 2026-08-27 14:40:33.738: [07623784] SMTP session terminated (Bytes in/out: 
301/477)


Dan ini


Thu 2026-08-27 14:55:22.279: [07623944] Session 07623944; child 0001
Thu 2026-08-27 14:55:22.279: [07623944] Accepting SMTP connection from 
182.23.38.243:58909 to 192.168.19.3:25
Thu 2026-08-27 14:55:22.729: [07623944] --> 220 mail.koreainvestment.co.id 
ESMTP MDaemon 25.5.2; Thu, 27 Aug 2026 14:55:22 +0700
Thu 2026-08-27 14:55:22.736: [07623944] <-- EHLO mx2.hanabank.co.id
Thu 2026-08-27 14:55:22.737: [07623944] --> 250-mail.koreainvestment.co.id 
Hello mx2.hanabank.co.id [182.23.38.243], pleased to meet you
Thu 2026-08-27 14:55:22.737: [07623944] --> 250-ETRN
Thu 2026-08-27 14:55:22.737: [07623944] --> 250-8BITMIME
Thu 2026-08-27 14:55:22.737: [07623944] --> 250-ENHANCEDSTATUSCODES
Thu 2026-08-27 14:55:22.737: [07623944] --> 250-PIPELINING
Thu 2026-08-27 14:55:22.737: [07623944] --> 250-CHUNKING
Thu 2026-08-27 14:55:22.737: [07623944] --> 250 SIZE 51937280
Thu 2026-08-27 14:55:22.788: [07623944] <-- MAIL 
From:<[email protected]> SIZE=2337521
Thu 2026-08-27 14:55:22.788: [07623944] --> 250 2.1.0 Sender OK
Thu 2026-08-27 14:55:22.795: [07623944] <-- RCPT 
To:<[email protected]>
Thu 2026-08-27 14:55:22.801: [07623944] --> 250 2.1.5 Recipient OK
Thu 2026-08-27 14:55:24.883: [07623944] <-- RSET
Thu 2026-08-27 14:55:24.883: [07623944] --> 250 2.0.0 RSET? Well, OK
Thu 2026-08-27 14:55:55.010: [07623944] Connection closed
Thu 2026-08-27 14:55:55.010: [07623944] SMTP session terminated (Bytes in/out: 
129/349)

Apakah bisa dibantu pak,,, kira2 masalahnya ada dimana ya pak,,,?


--
The contents of this e-mail and attachments are confidential and subject to 
legal privilege. 
If you are not the intended recipient, you are strictly prohibited and may be 
unlawful to use, copy, store, distribute, disclose or communicate any part of 
it to others and you are obliged to return it immediately to sender notify us 
and delete the e-mail and any attachments from your system.
PT Korea Investment Management Indonesia cannot guarantee that e-mail 
communications are secure or error-free, as information could be intercepted, 
corrupted, amended, lost, destroyed, arrive late or incomplete, or contain 
viruses.

--
--[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.com
Berlangganan: Kirim mail ke [email protected]
Henti Langgan: Kirim mail ke [email protected]
Versi terakhir: MDaemon 26.0.4, SecurityGateway 12.5.0



Kirim email ke