How can mamzeirim marry out-of-towners??
They can’t. The point is that they were married to people who didn’t know their status.
I always wonder how many people in the world today are mamzeirim and don’t know it either because their ancestor’s infidelity was never discovered (and, please, don’t insult my intelligence by telling me it never happens)or publicized, or because they quietly moved to another country and didn’t tell anyone their status.
The Wolf