Dear All, I use Qmail with RedHat 6. My POP3 is set to authenticate from another RADIUS server, and I want something similar in case of SMTP also. Is it possible ? Can I completely bypass the need of password file on the mail server , something like : Computer A: POP3 + SMTP ( without password file) Computer B: RADIUS (main password file ) Any Link, refrencces, documentations will be highly appretiated. TIA Shashi