Mail::Sender is generating an error message because it could not connect to the server. Because you are not checking for errors, you would never know that and your code continues anyway. A quick perusal of the Mail::Sender doc suggests some error checking techniques. Something to the effect of:

$sender->Open({
   smtp =>'mail',
   to =>"$from",
   from =>"$ticketad",
   fake_from =>"$ticketad",
   subject =>"Help Desk Submission",
   headers => "Errors-To: postmaster\@mydomain.com"});

die "Error: $Mail::Sender::Error\n" unless ref $sender;
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-- vek --