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.
