+ /* RFC3030 section 2: "After all MAIL and RCPT responses are collected and
+ processed the message is sent using a series of BDAT commands"
+ implies that BDAT should be synchronized. However, we see Google, at least,
+ sending MAIL,RCPT,BDAT-LAST in a single packet, clearly not waiting for
+ processing of the RPCT response(s). We shall do the same, and not require
+ synch for BDAT. */
+
+ BDAT_CMD,
+