You need to read the file into a single scalar, not an array like this:

my $file3 = do {local $/; <FILEHANDLE>};

[download]
and then use:
my $response = POST (URI, [ form_zone => $file3, submit => 'Submit', 
  form_result => 'true', menu => 'edit_dns', 
  user => 'username', auth => '*:strange_string',
  account => 'account_name', mbox => ''],
 REFERRER => LAST_PAGE);

[download]
Try this to see what did you actually pass to the POST() function:
my $aref = [ form_zone => @file3, submit => 'Submit', 
  form_result => 'true', menu => 'edit_dns', 
  user => 'username', auth => '*:strange_string',
  account => 'account_name', mbox => ''];
print "( '", join("', '", @$aref), "')\n";

[download]
Do you see what happened? The whole @file3 array was flattened into the array in the square brackets.

Jenda
We'd like to help you learn to help yourself
Look around you, all you see are sympathetic eyes
Stroll around the grounds until you feel at home
   -- P. Simon in Mrs. Robinson

In reply to Re: LWP/HTTP::Request::Common - form submission by Jenda
in thread LWP/HTTP::Request::Common - form submission by bdgenz

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