invalid SSL_version specified at /usr/local/share/perl5/IO/Socket/SSL.pm line 598 - linux

Question

When I try send an email using Net::SMTP::TLS from perl script I am getting below:
invalid SSL_version specified at /usr/local/share/perl5/IO/Socket/SSL.pm line 598
OS:Linux
You know what the problem is and what I have to do to fix it?
Thank you!

Answer 1

Net::SMTP::TLS is not maintained since 10 years and it is broken in that it causes exactly the error you describe. If you insist of using this broken module you need to fix it. Change the code in line 182 to remove the invalid setting of SSL_version:
if(not IO::Socket::SSL::socket_to_SSL($me->{sock},
- SSL_version => "SSLv3 TLSv1")){
+ )){
croak "Couldn't start TLS: ".IO::Socket::SSL::errstr."\n";
}
Instead of using the broken and unmaintained Net::SMTP::TLS or its successor but again unmaintained Net::SMTP::TLS::ButMaintained I suggest you use the latest version of Net::SMTP which has built in support for both kinds of SMTP+SSL and for IPv6 too. It comes already by default with newer Perl versions.
If using a new Net::SMTP is not possible you might use Net::SSLGlue::SMTP which monkey patches older Net::SMTP version to add SSL support. And there is also Net::SMTPS which provides a similar functionality.

Answer 2

Let me summarize as I had just fixed my problem (Thanks to the contributors above)
Open [Perl_dir]/site/lib/Net/SMTP/TLS.pm
Look for line 182, which looks like
if(not IO::Socket::SSL::socket_to_SSL($me->{sock}, SSL_version=>"SSLv3 TLSv1")){
Changed to line below by removing "SSL_version=>"SSLv3 TLSv1"
if(not IO::Socket::SSL::socket_to_SSL($me->{sock})){
Save [Perl_dir]/site/lib/Net/SMTP/TLS.pm
Other ref URL:
http://www.pclinuxos.com/forum/index.php/topic,143156.msg1223280.html#msg1223280