I have 3 years working experience as Sr
System Engineer in a leading Internet and IP Telephony Service Provider in
Bangladesh. Here I am working on Mail server (EXIM), Email Authentication (SPF, PTR, DKIM), FTP, Web and
NS hosting server, WHM/cPanel, DNS, Proxy, IP-PBX (Elastix, Asterisk), Soft-switch,
Media Gateway, SS7 Signaling. Good working experience IP Network Routing,
Switching and Security.