Hi,
what you seem to want here is not assign the hash to a file (that would be a tie), but to just write out as key value pairs:

#!/usr/bin/perl
use strict;
use warnings;
my %hash = ( 
"manager.1.address" => "127.0.0.1",
"manager.1.port" => "162",
"manager.1.version" => "2",
"manager.2.address" => "127.3.2.1",
"manager.2.port" => "132",
"manager.2.version" => "1" ); 

open(OUT, ">$outfile") or die "Could not open file for writing: " . $!
+;

foreach (keys %hash) {
    print OUT "$_=$hash{$_}\n";
}

close OUT;
[download]

prints (aka writes)

manager.1.port=162
manager.1.version=2
manager.2.address=127.3.2.1
manager.2.port=132
manager.2.version=1
manager.1.address=127.0.0.1
[download]

to the file
Regards,
svenXY