"domain"[TAB]"alias"[TAB]"realaccount"[NEWLINE]
Example:
"home.bogus" "usal" "axmsuser"
define 'usal' as alias for 'axmsuser' in 'home.bogus' domain.
"home.bogus" "foo*bog" "axmsuser@internal-domain.org"
define an alias for all users whose names start with 'foo' and end with 'bog' that point to the locally handled account 'axmsuser@internal-domain.org'.
"home.bogus" "??trips" "travels"
define an alias for all users whose names start with any two chars and end with 'trips'. You can have wildcard even in the domain field, as:
"*" "postmaster" "postmaster@domain.net"
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