Our PTR records are managed by our ISP, as our ranges are too small for them to consider delegating to us. So, every time I want to update an entry, I have to email their support team.
In an effort to keep things simple, I'm considering asking them to do a one time change on all of our IPs. Each record would be set up such that 18.104.22.168 would be host-1-2-3-4.mycompany.net. Of course, we'd set up the corresponding A records as appropriate.
While this is all technically possible, my question is simple: Are we more likely to get our outgoing email marked as spam because the reverse lookup entries bear some resemblance to many home/small business ISPs - with the actual IP in the name?
(I ask because my office's IP is static-1-2-3-4.region.fios.verizon.net, and that gets blocked often despite being a static IP. But I think that's because it's *.fios.verizon.net. I suppose I could come up with some sort of random identifier for each IP, but this seemed straightforward to comprehend.)