[mailop] Looking for feedback on the Certified Senders Alliance (CSA)

Hello, I'm looking for feedback on the Certified Senders Alliance (CSA). My current reasoning : at job, we provide a SaaS solution for cash collection & credit management. This implies to send emails to end customers in order to exchange about incoming invoices. We sent emails to servers a

[mailop] Looking for a contact at infonet.com.br

Dear list, One of our servers is blacklisted on a RBL owned by infonet.com.br (brazilian portal looking to be hosting / actuality / ISP / ...) :     (reason: 554 5.7.1 Service unavailable; Client host [xx.xx.xx.xx] blocked using rbl.infonet.com.br; RBL infonet.com.br - IP listado: xx.xx.xx.

[mailop] IP blocked on Proofpoint

Hello, We bought some weeks ago, against our hosting provider, a new batch of IP failover. Some have been previously misused (by previous owner) and listed on Proofpoint RBL. I request, through https://ipcheck.proofpoint.com/, a review of IP and all have been cleaned. All except one !