RE: [cobalt-users] Re:FW: RaQ4 - Blocking e-mail

["Tim Skipper" <mailinglists@xxxxxxxxxxxxxxxxxxxxxxxx>]

Charlie Summers wrote

>> "Tim Skipper" <mailinglists@xxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>> > How can I block, preferably on a site-by-site basis if possible,
>> > e-mail being accepted from a given domain?
>>
>> Tim, use procmail, which is already installed on your RaQ4.  Do the
>> following.
>
>   This doesn't "block" email, it only trashes it. (And personally,
I'd use
>an external file of domain names instead of trying to place them all
within
>the rc file itself, and I'd _never_ use the From: header field alone
since
>spam rarely will come from the same machine the From: header field's
been
>forged to read, but that stuff's the sort of thing best discussed on
the
>procmail mailing list.)

Thanks for the info Charlie.  Actually my original request wasn't a
spam blocking issue, rather I wanted to prevent users from a couple of
Chinese domains (specifically 163.com and sina.com) from subscribing
to a mailing list I run which lives on a windows machine that related
mail is forwarded to.

I don't want to block it at server level as the 100 or so other
clients I host may have legitimate reason for accepting mail from
these domains, hence my request for site level blocking.

Since then I've been reading up on procmail and I'm pretty confident
I've grasped it enough to handle this task through the use of procmail
recipes.

I know it still accepts the mail and therefore still consumes
bandwidth, but there doesn't appear to be a better solution. We're not
talking GB of the stuff anyway.

Regards,
Tim Skipper