> Yang lengkap 1 session, jangan dipotong-potong, agar saya bisa analisis 
> dengan baik dan akurat.

Maaf ketinggalan copy pak,

Berikut lognya:

Tue 2021-08-24 11:41:18.935: ----------
Tue 2021-08-24 11:41:23.916: [01044822] Session 01044822; child 0002
Tue 2021-08-24 11:41:23.916: [01044822] Accepting SMTP connection from 
40.107.15.53:22852 to 117.102.89.155:25
Tue 2021-08-24 11:41:23.916: [01044822] --> 220 mail.mandau.id ESMTP MDaemon 
20.0.4; Tue, 24 Aug 2021 11:41:23 +0700
Tue 2021-08-24 11:41:24.092: [01044822] <-- EHLO 
EUR01-DB5-obe.outbound.protection.outlook.com
Tue 2021-08-24 11:41:24.092: [01044822] --> 250-mail.mandau.id Hello 
EUR01-DB5-obe.outbound.protection.outlook.com [40.107.15.53], pleased to meet 
you
Tue 2021-08-24 11:41:24.092: [01044822] --> 250-ETRN
Tue 2021-08-24 11:41:24.092: [01044822] --> 250-AUTH LOGIN CRAM-MD5 PLAIN
Tue 2021-08-24 11:41:24.092: [01044822] --> 250-8BITMIME
Tue 2021-08-24 11:41:24.092: [01044822] --> 250-ENHANCEDSTATUSCODES
Tue 2021-08-24 11:41:24.092: [01044822] --> 250 SIZE
Tue 2021-08-24 11:41:24.301: [01044822] <-- MAIL 
FROM:<[email protected]> SIZE=604934
Tue 2021-08-24 11:41:24.302: [01044822] Performing PTR lookup 
(53.15.107.40.IN-ADDR.ARPA)
Tue 2021-08-24 11:41:24.327: [01044822] *  D=53.15.107.40.IN-ADDR.ARPA TTL=(60) 
PTR=[mail-eopbgr150053.outbound.protection.outlook.com]
Tue 2021-08-24 11:41:25.129: [01044822] *  No A/AAAA records found
Tue 2021-08-24 11:41:25.129: [01044822] *  MDaemon configured to drop 
connection on PTR record mismatch
Tue 2021-08-24 11:41:25.129: [01044822] ---- End PTR results
Tue 2021-08-24 11:41:25.129: [01044822] --> 501 5.7.0 Domain must resolve
Tue 2021-08-24 11:41:25.129: [01044822] SMTP session terminated (Bytes in/out: 
106/303)
Tue 2021-08-24 11:41:25.129: ----------


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