It's not clear to me about mail from the internet to non-local addresses being automatically rejected unless they are explicitly listed in the aliases file.
I think the docs mean that I don't have to worry about rejecting mail from the internet sending to unknown user names. The only alias names I have in the aliases file are the standard ones plus three other aliases for my single simple mailing list. I do have two other local users besides myself. So, will all incoming mail to any user EXCEPT the aliases and the local users be rejected without having to explicitly list the two other local names? Thanks. -Tom