Thanks so much for the help. Setting up an App Password worked. For others who might need it the process was as follows:

I set up two step verification in the sending gmail account. With Less Secure App Access turned off I tried sending an email and got the following error message.

Can't locate object method "send" via package "5.7.9 Application-specific password required. Learn more at " (perhaps you forgot to load "5.7.9 Application-specific password required. Learn more ate552d27sm669322pjt.11 - gsmtp "?) at sndmlonefbctest.pl line 63, <STDIN> line 1.econdFactor i2-20020a17090ac40200b001bd0e552d27sm669322pjt.11 - gsmtp

I then went to security settings on the gmail account and selected Set up an App Password. One the next screen I selected Mail in the app dropdown and Windows Computer in the device dropdown. When I clicked the generate button it came back with a 16 character App Password with instructions to replace the Password used by my mail program with the App Password. I did that and it worked like a charm.

Thanks again for the help.