We spoof the client's email. So while we are sending from our IP address, the FROM is actually john@clientllc.com, the FROM name is John, and the REPLY-TO is john@clientllc.com.
10 years ago, that passed. Nowadays, it's unacceptable. I'm wondering if anyone has a solution that doesn't involve any DNS changes for the clients we are spoofing, because it just won't happen, unfortunately. Our entire newsletter is built upon email spoofing, which is a terrible practice but I cannot get management to allocate any more resources to fixing it than "just make it work again". I'm going to try to push sending out from our (verified) domain again using SMTP (so we keep our system other than the sending part), but I'm doubtful I will get the approval for that.
I see the contradiction and realize that the verification process is in place for an extremely good reason, but actually implementing a fix is not as simple as you would hope. I was just hoping for someone to have an idea that I had not already thought of.