Shiva Chauhan has been missing since Thursday night after starting his normal route and was last heard when he sent a text message at about 11:30pm (local time), police said.
An alarm was raised yesterday when deliveries were not made and Chauhan failed to show at an arranged meeting, the Melbourne Age reported.
His locked van was found about 3pm yesterday in Hutton Road, Keysborough. Inside the van Chauhan's wallet, identification and personal items were found, the report said.
Police have released pictures of Chauhan in a bid to trace him.