Unfortunately, no. The home domain on a Stellar account must point to the server where the Stellar TOML is stored. Because Stellarmint is hosting the Stellar TOML file on our servers, the home domain must point to a subdomain of Stellarmint.
That said, if you leave your Issuing Account unlocked, you can later find a web hosting service that makes it possible to host your token’s Stellar TOML file. At that point, you can change the home domain name on the Issuing Account to be your home domain where the TOML file is stored.
It’s also important to know, if you choose to lock the Issuing Account, the home domain of your token will forever be linked to Stellarmint.io