Postmaster 'best practices' query

[David Lesher <wb8foz () nrk com>]

A query to help educate me. Feel free to flame away;
the week is young.

Every site should accept/respond to "postmaster" -- T/F?

Or is it "Every site running mail"....
Or every box running mail?

IOW: Which of the following are required vice recommended vice
best practives, etc.

a)      postmaster () example com
b)      postmaster () mail example com
c)      postmaster () wizzbang example com
d)      postmaster () pop example com
e)      postmaster () cisco example com

and most important to me: where to I go to justify the
decisions on same?






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