===== sourcefile =====

john@example.com OK
bill@example.com OK
#group1@example.com OK
#group2@example.com OK

===== results =====

>postmap -q john@example.com sourcefile
OK
>postmap -q bill@example.com sourcefile
OK
>postmap -q \#group1@example.com sourcefile
>postmap -q "#group1@example.com" sourcefile
>postmap -q \"\#group1@example.com\" sourcefile
>

===== sourcefile2 ====
"john@example.com" OK
"bill@example.com" OK
"#group1@example.com" OK
"#group2@example.com" OK

===== results =====

>postmap -q john@example.com sourcefile2
>postmap -q bill@example.com sourcefile2
>postmap -q \#group1@example.com sourcefile2
>postmap -q "#group1@example.com" sourcefile2
>postmap -q \"\#group1@example.com\" sourcefile2
>postmap -q \"john@example.com\" sourcefile2
OK
>