Change sendmail SMTP reply code !

[eevdropper]

Hi,

I've like to do the following, when someone tries a RCPT TO , to a unknow user.
I'd like to send the 250 smtp reply code. So someone can not be sure if a users exists or not.
(Version sendmail 8.13.7 on fedora)

This is what happends now
RCPT TO:<nonexistent.e-mail_address@test.org>
550 5.1.1 <nonexistent.e-mail_address@test.org>... User unknown

This is what I'd like to achieve:
RCPT TO:<nonexistent.e-mail_address@test.org>
250 ok

Any suggestions?

thx,