sendemail: invalid SSL_version specified at /usr/share/perl5/IO/Socket/SSL.pm line 332

sudo aptitude install sendemail

sudo aptitude install libio-socket-ssl-perl

sendEmail -f xxx@gmail.com -t xxx@gmail.com -u Teste_Assunto -m Teste_Corpo -s smtp.gmail.com:587 -xu xxx_conta -xp xxx_senha -o tls=yes

if you have this error:
invalid SSL_version specified at /usr/share/perl5/IO/Socket/SSL.pm

The SSL_version is being coded as "SSLv3 TLSv1" and the regular expression is failing. I hacked it as a workaround as follows... change:
m{^(!?)(?:(SSL(?:v2|v3|v23|v2/3))|(TLSv1[12]?))$}i 
 to:
m{^(!?)(?:(SSL(?:v2|v3|v23|v2/3))|(TLSv1[12]?))}i

That did the trick for me.