I tried setting to undef instead of 0, but warning/notices are still sent out by amavis. So I appear to have a problem with these settings being overridden somewhere else(?)(or not understanding the right settings to use) but I hope someone can still answer my other questions:

- Are there best practices advice about sender notifications?
-
- Looks like default is to have notifications ("warnings?") enabled for attachments with banned file extensions. Doesn't this risk backscatter problems when sender address is forged?
-
- I cannot find a way to disable them - tried setting these all to 0 but no luck: $warnbadhsender $warnbannedsender $warn_offsite
-
- I'm having a very hard time finding documentation on any of those settings, what exactly they do - where can I find that?
-
- Also, is there a place to customize the message body (and possibly headers) for these notifications ("warnings?")?



On 2016-11-26 23:34, Dominic Raferd wrote:
I don't think there is a way to check what the current active settings
are for amavisd-new (nothing like postconf -n) - including all
defaults - unfortunately. We can of course check our own settings with
something like: grep -r "warn" /etc/amavis/conf.d|grep -v "\s*#"

The defaults that I am aware of are:

$warnbannedsender = undef;
$warnbadhsender   = undef;
$warn_offsite     = undef;
$warnvirusrecip   = undef;
$warnbannedrecip  = undef;
$warnbadhrecip    = undef;

I presume this means there are no warnings issued unless these
variables are set explicitly, and this isn't the case with ubuntu (or
I think debian) standard installations? Are you sure that warnings are
being issued by amavisd-new on your system?

On 26 November 2016 at 22:44, MRob <[email protected]> wrote:

Are there best practices advice about sender notifications?

Looks like default is to have notifications ("warnings?") enabled
for attachments with banned file extensions. Doesn't this risk
backscatter problems when sender address is forged?

I cannot find a way to disable them - tried setting these all to 0
but no luck: $warnbadhsender $warnbannedsender $warn_offsite

I'm having a very hard time finding documentation on any of those
settings, what exactly they do - where can I find that?

Also, is there a place to customize the message body (and possibly
headers) for these notifications ("warnings?")?

Thank you for your great product.

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