Emiliano,
> I'd like to use warnsender_by_ccat in order to advise the sender
> that there are virus in their outgoing mails.
This should not be done lightly. Practically all viruses
and other malware nowadays fake a sender address. Responding
to it by a NDN or by a warning sends a bounce to an innocent
bystander, and is a major contributor to backscatter.
> I prefere to use this command instead of warnvirusssender because
> the second one doesn't work in a policy bank, nevertheless
> I am not able to make warnsender_by_ccat work nor
> in the main section nor in a policy_bank section.
>
> These commands work properly (main section):
>
> $warnvirussender = 1;
> $warnrecip_maps_by_ccat{+CC_VIRUS} = [ 1 ];
>
> but this one doesn't work:
>
> $warnsender_by_ccat{+CC_VIRUS} = [ 1 ];
>
> I am using amavis 2.4.2-6.1 and postfix 2.3.8-2+etch1
The above should work, even though it would be more
correct to say:
$warnsender_by_ccat{+CC_VIRUS} = 1;
because (unlike %warnrecip_maps_by_ccat) the %warnsender_by_ccat
is not a by-recipient map, so its values are plain booleans
and not lists of lookup tables.
But what is probably happening in your case is suppression of
sender notifications by the @viruses_that_fake_sender_maps list,
which by default returns true for any virus name, thus NDN or a
sender warning in response to viruses is always suppressed.
Try this:
@viruses_that_fake_sender_maps = (new_RE(
[qr'^(EICAR|Joke\.|Junk\.)'i => 0],
[qr'^(WM97|OF97|W95/CIH-|JS/Fort)'i => 0],
[qr/^/ => 1], # true for everything else
));
and be VERY conservative what virus names you add
to the list as 'sincere'.
Mark
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