Implement the missing upgrade method on SMTPClient. (#1901)
Implement the missing upgrade method on SMTPClient. (#1901)


msimerson/Haraka,msimerson/Haraka,Synchro/Haraka,msimerson/Haraka,haraka/Haraka,Synchro/Haraka,haraka/Haraka,Synchro/Haraka,smfreegard/Haraka,smfreegard/Haraka,smfreegard/Haraka,haraka/Haraka,msimerson/Haraka,Synchro/Haraka,smfreegard/Haraka,haraka/Haraka