| 1 | This is more true with the subdirectory than the subdomain. | |
| 2 | You provide IPs and set up for subdomains in MTA or whatever best practices are that you suggest. | |
| 3 | Servers then resolve entries in their relevant sub domain by function. | |
| 4 | Be mindful of setting cookies at the appropriate domain level so other sub-domains are not affected | |
| 5 | If you are using a VPS ordedicated server, you can set up the subdomains yourself using Bind 9. |