Please implement X-Forwarded-For an proxy protocoll for web and mail protocols:
For an up to date application design fulfilling security aspects a proxy/sec geteway ... is absolutely necessary. Best would be Proxy/Sec Gateway -> Application/web Server -> Backend Data store
No way to expose an application/http server direct to the internet. Always use something like F5 LBL, haproxy, nginx, apache, IIS. Not to talk ablot load balancing, HA setups and SSL offloading.
Without these features, all IP restrictions, protocoll information and IP-Restrictions are wothless when using an security based application design.
So I would really appreciate to think about these really necessary feature for the Web and mail services (imap, smtp ...)
Many Thanks and best regards