IT Support, Computer Centre 
For Network/Phone: (91 291) 280 1171,  itsupport@iitj.ac.in
For Server/HPC/Home: (91 291) 280 1173, server@iitj.ac.in
For Website: (91 291) 280 1172, webmaster@iitj.ac.in
For Applications: (91 291) 280 1136, oa_automation@iitj.ac.in
For Email: (91 291) 280 1293, email_admin@iitj.ac.in
For all IT related Query:  helpdesk_cc@iitj.ac.in