If you use warnings, you will get a helpful message: 
Possible unintended interpolation of @xxx in string at

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The quickest thing to try is to avoid interpolating the @ using single quotes: 
$psswrd = 'xxx@xxx';

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In reply to Re: Net::FTP non-alphanumeric character by toolic
in thread Net::FTP non-alphanumeric character by bborman

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