I would say, double-check what you have on these lines:

my $work = 'me@work.com';
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and

... new Mail::Sender( {smtp => 'mail.domain.com',from => $work}) ...
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I think you forgot to change either the mailserver name or your work address. It's very likely that your SMTP server rejects emails unless the sender or recipient is a valid local account. So if you still have me@work.com as an email address or the wrong mail server, then it will be rejected.

Simon Flack ($code or die)
$,=reverse'"ro_';s,$,\$,;s,$,lc ref sub{},e;$,
=~y'_"' ';eval"die";print $_,lc substr$@,0,3;