Add graylist support

This also adds the first test for the project, so testing will need to be set up on Gitlab.

I'd also like to ask if you're looking for a maintainer. The code could use a lot of love, its very much still stuck in 2015.

dpi → changed the visibility of the branch 3423090-clamav-graylist to hidden.

Thanks for the offer - I've added you as a maintainer.

This new feature makes me slightly nervous, but I can see why it might be a pragmatic solution in some cases.

I'm pleased to see that there's logging, a specific permission for it, and that it's not enabled by default.

It'd be great if you can do some housekeeping on the module, including getting it setup for properly for gitlab.

Thanks again.

Thanks @mcdruid, this is absolutely an opt-in feature.

I'll get started shortly, I'll probably end up creating a 3.x with the same feature and config set. Mostly to raise minimum requirements, and to signify code changes. I dont intend to change behaviour, other than this issue and maybe other issues, pending queue triage.