saslpasswd2 without password prompt

[Yadavenedra Awasthi]

Hi,

I am trying to give below command so that it should not ask for password 
authentication but it is still asking for password authentication :

  saslpasswd2 -p -c -a smtpauth test at test.com test

Please let me know is it possible to add username and password in a 
single command line without promptimg for password in stdin.

Regards.
Yadavendra.