> Bisa disampaikan DSN (Delivery Status Notification) of failure message 
> lengkapnya?

Berikut cuplikan transcriptnya
Fri 2014-02-14 11:55:34: Attempting SMTP connection to [213.165.67.115:25]  Fri 
2014-02-14 11:55:34: Waiting for socket connection...
 Fri 2014-02-14 11:55:35: *  Connection established (192.168.1.11:1064 -> 
213.165.67.115:25)  Fri 2014-02-14 11:55:35: Waiting for protocol to start...
 Fri 2014-02-14 11:55:36: <-- 554-gmx.net (mxgmx103) Nemesis ESMTP Service not 
available  Fri 2014-02-14 11:55:36: <-- 554-No SMTP service  Fri 2014-02-14 
11:55:36: <-- 554 invalid DNS PTR resource record  Fri 2014-02-14 11:55:36: --> 
QUIT

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