Pak Syaril,

Terlampir adalah screenshot smtp receive di server kami, heran kok banyak
session yang gantung ya, ketika di check detailnya tampaknya banyak yang
coba2 masuk ke server, tp kemudian kenapa sessionnya on terusnya.
Contoh salah satu session :

Tue 2015-03-10 19:53:33.363: [165460] Session 165460; child 0036
Tue 2015-03-10 19:53:33.363: [165460] Accepting SMTP connection from
[190.36.113.3:15068] to [136.68.93.2:25]
Tue 2015-03-10 19:53:33.364: [165460] --> 220 mail.mscid.com ESMTP MDaemon
14.5.0; Tue, 10 Mar 2015 19:53:33 +0700
Tue 2015-03-10 19:53:33.665: [165460] <-- EHLO
190-36-113-3.dyn.dsl.cantv.net
Tue 2015-03-10 19:53:33.666: [165460] --> 250-mail.mscid.com Hello
190-36-113-3.dyn.dsl.cantv.net, pleased to meet you
Tue 2015-03-10 19:53:33.666: [165460] --> 250-ETRN
Tue 2015-03-10 19:53:33.666: [165460] --> 250-AUTH LOGIN CRAM-MD5 PLAIN
Tue 2015-03-10 19:53:33.666: [165460] --> 250-8BITMIME
Tue 2015-03-10 19:53:33.666: [165460] --> 250-ENHANCEDSTATUSCODES
Tue 2015-03-10 19:53:33.666: [165460] --> 250 SIZE 10240000
Tue 2015-03-10 19:53:33.969: [165460] <-- MAIL From:<[email protected]> =
account palsu
Tue 2015-03-10 19:53:33.971: [165460] Performing IP lookup (mscid.com)
Tue 2015-03-10 19:53:34.496: [165460] *  P=010 S=001 D=mscid.com TTL=(134)
MX=[mail.mscid.com]
Tue 2015-03-10 19:53:34.496: [165460] *  P=020 S=000 D=mscid.com TTL=(134)
MX=[mx-corp3.cbn.net.id]
Tue 2015-03-10 19:54:24.524: [165460] *  DNS: 50 second wait for DNS
response exceeded (DNS Server: 4.2.2.1)


Mohon pencerahannya

Regards,
Hidayat





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