You can't. Subs return a single list. You could return references to those arrays, though.

sub breakEmailAddress
{
   my ($address) = shift(@_); 
   my @components = split('@', $address); 
   my @counter    = split('@', $address);
   return (\@components, \@counter);
}

my ($first, $second) = breakEmailAddress('john@some.domain.com');
print "FirstArr: @$first\n";
print "SecondArr: @$second\n";
[download]

Don't forget to use my on the arrays, or else you'll always return a reference to the same arrays. Using my forces the creation of new arrays every call.

I removed the & from your subroutine call. Why are you telling Perl to ignore prototypes?

Update: Alternatively, you can pass references to your arrays to the sub, and have it fill up the arrays instead of returning values:

sub breakEmailAddress
{
   my ($components, $counter, $address) = shift(@_); 
   @$components = split('@', $address); 
   @$counter    = split('@', $address);
}

# breakEmailAddress(my @first, my @second, 'john@some.domain.com'); XX
+X

my(@first,@second);
breakEmailAddress(\@first, \@second, 'john@some.domain.com');  # Fixed
+ thanks to shmem

print "FirstArr: @first\n";
print "SecondArr: @second\n";
[download]

Update: Applied shmem's fix.