Fix to CTSMTPAsyncConnection so that it can also use SMTP with SSL on port 465.
Copied the changes made in the commit to CTSMTPConnection 2ac9928971ca on 20th November 2012 to enable the same feature.
Merge pull request #93 from DanGonz/master

Fix to CTSMTPAsyncConnection so that it can also use SMTP with SSL on port 465.