On 7/31/2023 5:53 AM, Florin Pasăre wrote:
We are using Mailman 2.1.15.
Why are you using such an old version of mailman? It's quite possible that a newer version, along with DKIM/SPF DNS records that Odhiambo mentioned, would clear up at least part of the problems.
Also, please look at which domains are bouncing mail and how often. Can you individually send to those people?
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