We're trying to set up a virtual host with many (50+) domains. In the past I've been successful with 20+ domains within the same ServerAlias directive, but on researching this, I'm seeing different answers. We're running Apache 1.3.33.
Some places suggest putting all domains in one ServerAlias line (which of course gets doubled by adding the wild card *.domain.com)
Others say there is a limit and that the solution is to have multiple ServerAlias lines within the same virtual host directive.