Ahoi,

On 2026-10-14 02:43, Adam Morris wrote:
Hi all,

I have a number of members for a list where the bounce score is incremented and 
eventually they are unsubscribed.

I’ve written to them using my personal address and messages don’t bounce.

Munge is set to on and as far as I know my cPanel provider has set up spf 
records.

Are  there any settings I can change to avoid this happening?

if you are asking for mailman-settings exlicitly, there is the verp-probe :


https://docs.mailman3.org/projects/mailman/en/latest/src/mailman/config/docs/config.html#verp-probes


in your mailman.cfg:

```
verp_probes: yes
```

whenever the list recognises a bouncing message from sending a list-post to a members list-address, the list itself sends a message (verp-probe) to the listmembers-address. If that gets delivered, bounce score is reset, but if that probe bounces, "delivery is then suspended immediately".

this helped me, when my infrastructure accepted mails from listmembers to lists but qualified them as spam. When trying to send those mails back out, the non-mailman-infrastructure did'nt let them out and mailman thougt, they could not be deliverd (and desubscribed dozens of valid members).

But i fear your problem is somewhere else.

Regards
Alexander


The addresses affected aren’t Hotmail.

Thanks in advance.

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