Surely this is a joke. No amount of IT is going to get email past public blacklists. You would have to modify the mail servers at the receiving end of each customer to ignore blacklists. This is not practical or even logical.  Intuit must contact the blacklisting service to have their IPs removed.  

The responses you coming from intuit employees on these threads are astounded.  I want to laugh that anyone would pay these people money to copy pasta form letters without reading or understanding the posts or context, but sadly I suspect most of these are just useless bots. 

Way to go, Intuit. Glad to see you're raising prices to "improve" service while shenanigans like this continue.