Michael Reeder -- Hygeia MS writes:
AT&T has now started blocking the IP address of the multiple auto-forwarding email addresses I set up to get around them blocking the IP address of my GNU Mailman list.
I have to conclude AT&T wants to get rid of their email provision activity.
Is there possibly something somebody could consider spammy in your content, such as frequent or repeated announcements of new services or invitations to events? Do members ever report the list traffic being marked as (potential) spam? Are these discussion lists among the members, or is it all announcements from your side?
37 list members at risk unless they change their email addresses.
AT&T hates them, so I recommend they get an alternative address for list mail and eventually get off AT&T altogether. It's not going to get better, I imagine. But most likely they won't change until they get sued for nonpayment of bills invoiced to their AT&T address. :-/
We started 20+ years ago with a different list program and hosting provider, so we have lots of legacy members suddenly getting cut off.
Do you keep archives? If so, an RSS feed might be the way to communicate to them in somewhat less than real time. Similarly, moving to Mailman 3 + HyperKitty allows use of the archives in a way quite similar to dedicated web forum software like Discourse. Finally (though I hate to recommend it) you could move to forum software or Google Groups.
I'm sorry to be putting all the work on you, but I don't think there's anything Mailman can do. It seems AT&T just doesn't want your list traffic.
Steve