fixed issues #21: SMTP SSL connection with callback
fixed issues #21: SMTP SSL connection with callback

jjz/libetpan,disaykin/libetpan,disaykin/libetpan,jjz/libetpan,jjz/libetpan,disaykin/libetpan,tipbit/libetpan,tipbit/libetpan,tipbit/libetpan