Fifteen more Australian police officers are facing disciplinary action in the racist e-mail scandal, as a top Victorian official said the incident undermines the work done with the Indian community to allay fears about their safety.

"We at Victoria Police have been working very closely with the Indian community over the last several months to ensure that we can address their needs, meet their expectations with regards the safety of Indian students," said Deputy Commissioner of Victorian police Kieran Walshe.

The Victorian police officers have been caught in a racist e-mail scandal joking about the electrocution of an Indian train passenger and suggesting that it could be "a way to fix the Indian student problem" in Melbourne.

"This sort of emailing has done nothing but to seriously jeopardise the good work that's been done," he was quoted as saying by the ABC.

While four policemen have been sacked, one has been demoted, another five have been fined up to 3000 dollars and placed on 12-month good behaviour bonds for their involvement in the case.

One officer has quit over the email, while another is on extended sick leave and will face a disciplinary hearing.

Fifteen more police officers are set to face hearings.

Nine will face hearings this week and six others next week.

Walshe said there are 11,000 operational police and it is unfortunate that two of them have chosen to act in this disgraceful manner.

"I'm sort of dumbfound a bit by what's been done," he said. "We do not condone racism."

Five of those disciplined in the August hearings are appealing the decisions against them, with the appeals yet to be heard.

The email scandal came after a spate of violent assaults against Indians and the killing of 21-year-old Indian student Nitin Garg in January, sparking concern from India over the safety of its students in Melbourne.