All links to Rfam should use the rfam.org domain.
Please update any links referring to the rfam.xfam.org domain.
Here are some examples of linking to Rfam:
Rfam accession numbers are more stable between releases than IDs.
We strongly recommend that you link by Rfam accession (e.g. RF00360).
You can also refer to a family by entry, although this is a convenience
that should be used only if you’re not sure if what you have is an accession or an ID.