SMTP::Data

Issues a data command and sends the msg_data to the server finializing the mail transaction. $msg_data is the message that is to be send with the headers. Each header needs to be on a single line followed by a <CRLF> with the message headers and the message body being separated by and additional <CRLF>.

Implements rfc 821: DATA <CRLF> SMTP CODE INTERMEDIATE: 354 [data] <CRLF>.<CRLF> SMTP CODE SUCCESS: 250 SMTP CODE FAILURE: 552, 554, 451, 452 SMTP CODE FAILURE: 451, 554 SMTP CODE ERROR : 500, 501, 503, 421