Hello to all:
mailman3 is phenomenal upgrade from mailman2. Very nice. Thank you to the team.
In our family, we use mailman to provide redundancy on important financial emails. In this manner, emails from banks, government, ecommerce or other important providers are distributed to multiple family members. And we can ask family members if they paid the credit card bill, received their delivery, saw their tax liability or refund notification, etc. Does anyone else use mailman for such a purpose?
Do you struggle with "message rejected. AUP#CDRBL" while using mailman with your ISP email relay?
For example, when receiving email from a Bank or the Government of Canada on a mailman2 list, sometimes my ISP would not relay the email and I would get message rejected. AUP#CDRBL
On mailman2, I mitigated by stripping headers, wrapping message and DKIM signing. Here is a mailman2 message that is stripped, wrapped and signed.
https://freeimage.host/i/30O5EXe
Do you have this problem with your ISP with certain senders? What are your mitigation strategies on mailman3?