Dear Pak Syafril,

Sy bikin milist baru di MDaemon, salah satu anggotanya saya coba masukkan 
alamat gmail saya, namun gmail tidak menerima message yang di kirmkan ke milist 
tersebut dengan error "Message has no valid return path, it was deleted", sbb :

Wed 2023-11-08 13:25:37.455: ----------
Wed 2023-11-08 13:25:36.534: [06257758] REMOTE message: pd8001007893756.msg
Wed 2023-11-08 13:25:36.534: [06257758] *  Session 06257758; child 0001
Wed 2023-11-08 13:25:36.535: [06257758] *  From: sraha...@aio.co.id
Wed 2023-11-08 13:25:36.535: [06257758] *  To: slamet.raha...@gmail.com
Wed 2023-11-08 13:25:36.535: [06257758] *  Subject: [aio-test2] Test milist 
from slamet 2
Wed 2023-11-08 13:25:36.535: [06257758] *  Message-ID: 
<mdaemon-f202311081325.aa2536525pd8001007893...@mail.aio.co.id>
Wed 2023-11-08 13:25:36.535: [06257758] *  Size: 3709; 
<c:\mdaemon\remoteq\pd8001007893756.msg>
Wed 2023-11-08 13:25:36.538: [06257758] MTA-STS policy for gmail.com found in 
cache
Wed 2023-11-08 13:25:36.538: [06257758] *  version: STSv1
Wed 2023-11-08 13:25:36.538: [06257758] *  mode: enforce
Wed 2023-11-08 13:25:36.538: [06257758] *  mx: gmail-smtp-in.l.google.com
Wed 2023-11-08 13:25:36.538: [06257758] *  mx: *.gmail-smtp-in.l.google.com
Wed 2023-11-08 13:25:36.538: [06257758] *  max_age: 86400
Wed 2023-11-08 13:25:36.540: [06257758] Resolving MX record for gmail.com (DNS 
Server: 192.168.1.135)...
Wed 2023-11-08 13:25:36.542: [06257758] *  P=005 S=004 D=gmail.com TTL=(25) 
MX=[gmail-smtp-in.l.google.com]
Wed 2023-11-08 13:25:36.542: [06257758] *  P=010 S=001 D=gmail.com TTL=(25) 
MX=[alt1.gmail-smtp-in.l.google.com]
Wed 2023-11-08 13:25:36.542: [06257758] *  P=020 S=002 D=gmail.com TTL=(25) 
MX=[alt2.gmail-smtp-in.l.google.com]
Wed 2023-11-08 13:25:36.542: [06257758] *  P=030 S=003 D=gmail.com TTL=(25) 
MX=[alt3.gmail-smtp-in.l.google.com]
Wed 2023-11-08 13:25:36.542: [06257758] *  P=040 S=000 D=gmail.com TTL=(25) 
MX=[alt4.gmail-smtp-in.l.google.com]
Wed 2023-11-08 13:25:36.542: [06257758] Attempting SMTP connection to 
gmail-smtp-in.l.google.com
Wed 2023-11-08 13:25:36.543: [06257758] Resolving A record for 
gmail-smtp-in.l.google.com (DNS Server: 192.168.1.135)...
Wed 2023-11-08 13:25:36.544: [06257758] *  D=gmail-smtp-in.l.google.com TTL=(1) 
A=[74.125.200.27]
Wed 2023-11-08 13:25:36.544: [06257758] Attempting SMTP connection to 
74.125.200.27:25
Wed 2023-11-08 13:25:36.545: [06257758] Waiting for socket connection...
Wed 2023-11-08 13:25:36.559: [06257758] *  Connection established 
192.168.1.19:65267 --> 74.125.200.27:25
Wed 2023-11-08 13:25:36.559: [06257758] Waiting for protocol to start...
Wed 2023-11-08 13:25:36.729: [06257758] <-- 220 mx.google.com ESMTP 
z10-20020a170903018a00b001c60636e426si1678722plg.432 - gsmtp
Wed 2023-11-08 13:25:36.730: [06257758] --> EHLO mail.aio.co.id
Wed 2023-11-08 13:25:36.902: [06257758] <-- 250-mx.google.com at your service, 
[202.158.62.55]
Wed 2023-11-08 13:25:36.902: [06257758] <-- 250-SIZE 157286400
Wed 2023-11-08 13:25:36.902: [06257758] <-- 250-8BITMIME
Wed 2023-11-08 13:25:36.902: [06257758] <-- 250-STARTTLS
Wed 2023-11-08 13:25:36.902: [06257758] <-- 250-ENHANCEDSTATUSCODES
Wed 2023-11-08 13:25:36.902: [06257758] <-- 250-PIPELINING
Wed 2023-11-08 13:25:36.902: [06257758] <-- 250-CHUNKING
Wed 2023-11-08 13:25:36.902: [06257758] <-- 250 SMTPUTF8
Wed 2023-11-08 13:25:36.902: [06257758] --> STARTTLS
Wed 2023-11-08 13:25:37.072: [06257758] <-- 220 2.0.0 Ready to start TLS
Wed 2023-11-08 13:25:37.090: [06257758] SSL negotiation successful (TLS 1.3, 
TLS_AES_256_GCM_SHA384)
Wed 2023-11-08 13:25:37.097: [06257758] SSL certificate is valid (matches 
gmail-smtp-in.l.google.com and is signed by recognized CA)
Wed 2023-11-08 13:25:37.097: [06257758] MTA-STS success for gmail.com
Wed 2023-11-08 13:25:37.098: [06257758] --> EHLO mail.aio.co.id
Wed 2023-11-08 13:25:37.268: [06257758] <-- 250-mx.google.com at your service, 
[202.158.62.55]
Wed 2023-11-08 13:25:37.268: [06257758] <-- 250-SIZE 157286400
Wed 2023-11-08 13:25:37.268: [06257758] <-- 250-8BITMIME
Wed 2023-11-08 13:25:37.268: [06257758] <-- 250-ENHANCEDSTATUSCODES
Wed 2023-11-08 13:25:37.269: [06257758] <-- 250-PIPELINING
Wed 2023-11-08 13:25:37.269: [06257758] <-- 250-CHUNKING
Wed 2023-11-08 13:25:37.269: [06257758] <-- 250 SMTPUTF8
Wed 2023-11-08 13:25:37.269: [06257758] --> MAIL From:<> SIZE=3709
Wed 2023-11-08 13:25:37.269: [06257758] --> RCPT To:<slamet.raha...@gmail.com>
Wed 2023-11-08 13:25:37.438: [06257758] <-- 250 2.1.0 OK 
z10-20020a170903018a00b001c60636e426si1678722plg.432 - gsmtp
Wed 2023-11-08 13:25:37.589: [06257758] <-- 250 2.1.5 OK 
z10-20020a170903018a00b001c60636e426si1678722plg.432 - gsmtp
Wed 2023-11-08 13:25:37.589: [06257758] --> BDAT 3709 LAST
Wed 2023-11-08 13:25:37.589: [06257758] Sending 
<c:\mdaemon\remoteq\pd8001007893756.msg> to [74.125.200.27]
Wed 2023-11-08 13:25:37.590: [06257758] Transfer Complete
Wed 2023-11-08 13:25:38.149: [06257758] <-- 550-5.7.26 Unauthenticated email 
from aio.co.id is not accepted due to domain's
Wed 2023-11-08 13:25:38.149: [06257758] <-- 550-5.7.26 DMARC policy. Please 
contact the administrator of aio.co.id domain
Wed 2023-11-08 13:25:38.149: [06257758] <-- 550-5.7.26 if this was a legitimate 
mail. Please visit
Wed 2023-11-08 13:25:38.149: [06257758] <-- 550-5.7.26  
https://support.google.com/mail/answer/2451690 to learn about the
Wed 2023-11-08 13:25:38.149: [06257758] <-- 550 5.7.26 DMARC initiative. 
z10-20020a170903018a00b001c60636e426si1678722plg.432 - gsmtp
Wed 2023-11-08 13:25:38.149: [06257758] --> QUIT
Wed 2023-11-08 13:25:38.150: [06257758] Message has no valid return path, it 
was deleted
Wed 2023-11-08 13:25:38.317: [06257758] <-- 221 2.0.0 closing connection 
z10-20020a170903018a00b001c60636e426si1678722plg.432 - gsmtp
Wed 2023-11-08 13:25:38.318: [06257758] SMTP session terminated (Bytes in/out: 
1940/4612)
Wed 2023-11-08 13:25:38.318: ----------

Mohon pencerahan untuk  issue ini.

Best Regards,

Slamet Raharjo
IT Dept.


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