On Thu, 2007-01-11 at 12:44 +0100, Manuel Schneider [Everything Open]
wrote:
> > My solution: I have set up the backup mx system as usual and then do a
> > "esmtpd stop". A simple script (executed once a few minutes) tests
> > availability of the primary mx system (just connect, HELO and QUIT). If the
> > primary seems down, "esmtpd start" gets executed. When the primary is there
> > again, esmtpd gets stopped.
>
> That's a nice idea!
>
> However, nobody answered my original question.
> I still want to be able to filter mails which aren't delivered locally. This
> does also apply for mails which will be aliased to an adress at another host.
>
> Greets,
>
> Manuel
>From courier man page:
....
enablefiltering
This configuration file enables the global mail filtering API
for selected mail sources. This file, if it exists, contains a
single line of text that specifies which kind of mail will be
filtered. The possible values are:
esmtp Enables global mail filtering for mail received via
ESMTP.
local Specifies that mail received from logged on users, via
sendmail, and mail forwarded from dot-courier(5) will be
filtered using the global mail filtering API.
uucp Specifies that mail received from UUCP will be filtered.
If you want to specify more than one source of mail, such as ESMTP and
local mail, specify both esmtp and local, separated by a space charac-
ter.
Note: The global mail filtering API is described, in detail, in
the courierfilter(8) manual page. This is NOT the traditional
user-controlled mail filtering, such as maildrop(1). A global
mail filter is a daemon process that selectively accepts or
rejects incoming mail, based on arbitrary criteria.
....
I have file '/etc/courier/enablefiltering' with one line: 'local esmtp'
and everything is filtered via clamcour installed as global mail filter.
Keep in mind that global filtering cannot alter emails! Global filters
just accept or reject email. This is good for virus checking and not
good for spam ( at least for me ).
Best regards,
Svetozar
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