Do I need to force population of LocalAddr and LocalPort?

No.

Do I have a bad mix of file versions?

They look outdated, so that could be the cause, you should upgrade.

For future reference, install Devel::Modlist, use like  perl -d:Modlist script.pl, and you get 
$ perl -d:Modlist -MCGI -le 1
CGI                    3.49
CGI::Util              3.48
Carp                   1.11
Exporter               5.63
constant               1.19
overload               1.07
vars                   1.01
warnings               1.06
warnings::register     1.01

[download]

Am I just doing something dumb?

Unlikely

In reply to Re: Mac OS X and Email::Send::Gmail by Anonymous Monk
in thread Mac OS X and Email::Send::Gmail by smithca2

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