If MarsEdit fails to automatically detect your blog settings, you can enter them manually.
The Connection tab of the blog's settings includes a number of fields. The Blog Name and Homepage URL should already be filled in.
For the System Name popup, select the appropriate system for your blog. If it’s not one of the listed types, select Other.
For the System API popup, you should leave the default selection unless you are sure you want to choose an alternative. If you selected "Other" for the system name, you’ll need to consult the blog system’s documentation to find out what API it supports, so you can choose an appropriate API here.
The API Endpoint URL field should contain the URL of the API endpoint on your system. This is not the URL of your RSS or Atom feed. If you are not sure what the API is for your blog system, see the system-specific instructions linked below.
The Blog ID is often your username or a number that identifies your blog. Different systems have different ways of letting you find out what the Blog ID is.
Instructions for manually configuring popular blog systems:
If your system is not listed above, you’ll need to find out which API it conforms to, if any. The best way to find this is to search documentation for terms like "xmlrpc". Many systems support the "MetaWeblog" or "Movable Type" APIs.
When you’re finished, click the OK button to save your changes.