For some time now the standard backlog of qmail requests on the server has been increasing (it seems to average 2500-3000 or so currently) and I suspect that at least some portion of this is related to mailing list subscribers whose addresses no longer work. For some time now most mailing list notices have been going to this mailing list (I've never yet figured out why) and I've simply been deleting them from the moderation queue rather than have everyone flooded by them. But really the ones that are due to dead subscribers should be handled at some point. I'm really not sure who or how this has been processed in the past and I'm wondering if anyone knows or has an opinion on a policy for this.
For example do I drop someone on the first bounce that seems to indicate something that won't be quickly fixed? Do I wait for response X or period of time Y? What about weeks and weeks of transient problems like full mailbox? I think you get the idea.
Of course I also cannot handle these myself (for the most part) since I handed off overall mailing list admin duties to Marcus. So somehow he and I will need to work out an interface for this.
Ken