Those people who have a post office account or IPPB account, are receiving messages from DOPBNK IDs. The list of these IDs is as under-
ID-DOPBNK, VD-DOPBNK, TD-DOPBNK, VK-DOPBNK, ax-DOPBNK, vm-DOPBNK, jd-DOPBNK, ad-DOPBNK, bt-DOPBNK, bz-DOPBNK, bh-DOPBNK, bv-DOPBNK, bv-DOPBNK, etc.