[Mimedefang] Blocking Dictionary Attacks

[afo cliff]

>>> Matt Garretson wrote:
>>>>
>>>> afo cliff wrote:
>>>>>
>>>>> @mydomain.com bitbucket
>>>>
>>>> You can also do something like this in your virtusertable:
>>>>
>>>> @mydomain.com  error:5.1.1:550 User unknown
>>>>
>>>> Then, you won't need the bitbucket alias.
>>>> See http://www.sendmail.org/m4/features.html
>>>

Yes thanks, I tried that, the down side for me is that it sends a
"User Unknown" reject notification, which I'm trying to avoid.  I
don't want my server to waste time sending 10,000 rejects to a zombie
somewhere.