elmo prodded me on IRC that my mail host was refusing spam with a “550 Message classified as spam”. While this is correct, it causes double-bounces to go to postmaster@debian.org, which is unintentional. At Samfundet we have a setup which doesn’t bounce spam sent to lists, it just accepts it and nullroutes it. I don’t think that’s the right way, but it’s better than annoying postmaster@debian with bounces.

I’m using exim4, and this is how I solved it. I replaced my normal spam-bounce rule:

with:

In addition, a special router is needed; mine is called 50_err_devnull:

Finally, the devnull transport:

This is a bit hard-coded and could probably be fixed a bit better, but it seems to work fine for me, at least.

Back to posts