[PLUG] Spammer techniques question (fwd)

[Rich Shepard]

On Thu, 1 Aug 2002, Mike Witt wrote:

> There are many ways to harvent addresses, as other have mentioned,
> however they also do try common names. My domains get many spams
> to users that don't exist and never have existed. Occasionally,
> I see a system connect and send spam to 20 or 30 common first 
> names.

Mike,

  Are there header_checks in postfix that can detect and reject unwanted
names? For example, I get a lot of spam to "undisclosed-recipients"@... and
I'd like to block that. Alternatively, if there's a place to put the few
usernames that are actually available, that would be great, too.

Thanks,

Rich