You're not running your own mail server without rDNS and that requires your ISP. This guy is talking about running a dynamic IP, he's not getting rDNS for that. Without rDNS, your mail is assumed spam and does not reach destination.
Also, not available without business class, at least on my ISP, is port 80. You won't be hosting many web properties if Joe user types in yourdomain.com into a browser without the leading https://, which nobody does anywhere. If browser makers defaulted to https, I'm sure the ISP would fix this glaring hole in their non-business class plans promptly.
Also, not available without business class, at least on my ISP, is port 80. You won't be hosting many web properties if Joe user types in yourdomain.com into a browser without the leading https://, which nobody does anywhere. If browser makers defaulted to https, I'm sure the ISP would fix this glaring hole in their non-business class plans promptly.