All I can say is that the described behavior does not fit the config you have posted. Your description sounds like some banned_*_maps are involved at some point, maybe even indirectly via inclusion of other config files.
> I'm pretty shure to have the right part of the debian config files. We have > some adoptions in the files located at /etc/amavis/conf.d > > Some initial settings are in 20-debian-default and the part copied in was > from file 90-local-settings, which will be the last loaded while starting. > > The funny thing is, the same sender can submit the same mail with identical > attachement to other recipients with no problems. > > I saw 1 mail to multiple recipient, for witch exacly the mail for exacly the > one recipient was banned.
