Dear Pak Syafril,
mohon bantuannya terkait user-user kami menerima email dari diri mereka sediri 
yang berisikan SPAM.
berikut hasil SMTP-In nya:
Mon 2018-11-05 04:32:40: ----------Mon 2018-11-05 04:34:11: Session 2568; child 
1; thread 4020Mon 2018-11-05 04:34:09: Accepting SMTP connection from 
[89.155.49.28:21000]Mon 2018-11-05 04:34:09: --> 220 mail.mandau.id ESMTP 
MDaemon 10.0.2; Mon, 05 Nov 2018 04:34:09 +0700Mon 2018-11-05 04:34:09: <-- 
EHLO a89-155-49-28.cpe.netcabo.ptMon 2018-11-05 04:34:09: --> 
250-mail.mandau.id Hello a89-155-49-28.cpe.netcabo.pt, pleased to meet youMon 
2018-11-05 04:34:09: --> 250-ETRNMon 2018-11-05 04:34:09: --> 250-AUTH=LOGINMon 
2018-11-05 04:34:09: --> 250-AUTH LOGIN CRAM-MD5Mon 2018-11-05 04:34:09: --> 
250-8BITMIMEMon 2018-11-05 04:34:09: --> 250 SIZE 35000000Mon 2018-11-05 
04:34:09: <-- MAIL From:<frand...@masindo.id>Mon 2018-11-05 04:34:09: 
Performing IP lookup (masindo.id)Mon 2018-11-05 04:34:09: *  D=masindo.id 
TTL=(180) A=[202.74.238.130]Mon 2018-11-05 04:34:10: *  P=000 S=000 
D=masindo.id TTL=(180) MX=[mail.masindo.id]Mon 2018-11-05 04:34:10: *  
D=masindo.id TTL=(180) A=[202.74.238.130]Mon 2018-11-05 04:34:10: ---- End IP 
lookup resultsMon 2018-11-05 04:34:10: --> 250 <frand...@masindo.id>, Sender 
okMon 2018-11-05 04:34:10: <-- RCPT To:<frand...@masindo.id>Mon 2018-11-05 
04:34:10: Performing DNS-BL lookup (89.155.49.28 - connecting IP)Mon 2018-11-05 
04:34:10: *  zen.spamhaus.org - failed - 127.0.0.10Mon 2018-11-05 04:34:10: 
---- End DNS-BL resultsMon 2018-11-05 04:34:10: --> 250 <frand...@masindo.id>, 
Recipient okMon 2018-11-05 04:34:10: <-- DATAMon 2018-11-05 04:34:10: Creating 
temp file (SMTP): c:\mdaemon\queues\temp\md50000088532.tmpMon 2018-11-05 
04:34:10: --> 354 Enter mail, end with <CRLF>.<CRLF>Mon 2018-11-05 04:34:11: 
Message size: 3274 bytesMon 2018-11-05 04:34:11: Performing DKIM lookupMon 
2018-11-05 04:34:11: *  File: c:\mdaemon\queues\temp\md50000088532.tmpMon 
2018-11-05 04:34:11: *  Message-ID: 
D62AE025311CEFF408C207133ECDD62A@FINVRX1BQMon 2018-11-05 04:34:11: *  Result: 
neutralMon 2018-11-05 04:34:11: ---- End DKIM resultsMon 2018-11-05 04:34:11: 
Performing DomainKeys lookup (Sender: frand...@masindo.id)Mon 2018-11-05 
04:34:11: *  File: c:\mdaemon\queues\temp\md50000088532.tmpMon 2018-11-05 
04:34:11: *  Message-ID: D62AE025311CEFF408C207133ECDD62A@FINVRX1BQMon 
2018-11-05 04:34:11: *  Querying for policy: masindo.idMon 2018-11-05 04:34:11: 
*    Querying: _domainkey.masindo.id ...Mon 2018-11-05 04:34:11: *    DNS: *  
Name server has no records of the requested type for that domainMon 2018-11-05 
04:34:11: *  Result: neutralMon 2018-11-05 04:34:11: ---- End DomainKeys 
resultsMon 2018-11-05 04:34:11: Passing message through AntiVirus (Size: 
3274)...Mon 2018-11-05 04:34:11: *  An error occured, message will be scanned 
again when queuedMon 2018-11-05 04:34:11: ---- End AntiVirus resultsMon 
2018-11-05 04:34:11: Passing message through Outbreak Protection...Mon 
2018-11-05 04:34:11: *  Message-ID: 
D62AE025311CEFF408C207133ECDD62A@FINVRX1BQMon 2018-11-05 04:34:11: *  
Reference-ID: fgs=0Mon 2018-11-05 04:34:11: *  Virus result: 0 - CleanMon 
2018-11-05 04:34:11: *  Spam result: 1 - CleanMon 2018-11-05 04:34:11: *  IWF 
result: 0 - CleanMon 2018-11-05 04:34:11: ---- End Outbreak Protection 
resultsMon 2018-11-05 04:34:11: Message creation successful: 
c:\mdaemon\queues\inbound\md50000285042.msgMon 2018-11-05 04:34:11: --> 250 Ok, 
message saved <Message-ID: D62AE025311CEFF408C207133ECDD62A@FINVRX1BQ>Mon 
2018-11-05 04:34:11: <-- QUITMon 2018-11-05 04:34:11: --> 221 See ya in 
cyberspaceMon 2018-11-05 04:34:11: SMTP session successful (Bytes in/out: 
3388/459)Mon 2018-11-05 04:34:11: ----------

mohon bantuannya pak, apayang bisa dilakukan untuk hal ini.
terima kasih
Irwan
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