[Mimedefang] how to disable notify=success

[Marco Berizzi]

Aleksandar Milivojevic wrote:

>You can also prevent requests for them to hit your users.  IMO, this is 
>good
>things, since return receipts are very handy way for spammers to verify 
>that an
>email address exists.
>
>To disable them on SMTP level, simply tell sendmail you want to disable the
>feature.  Add noreceipts to confPRIVACY_FLAGS in sendmail.mc and reubuild
>sendmail.cf from it.  For example:
>
>define(`confPRIVACY_FLAGS', `goaway,restrictqrun,noreceipts,noetrn')

Is this a good thing to do? I was thinking to enable this setting.
Thanks a lot to everybody for the feedback.