--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/smtp.txt	Tue Nov 04 11:33:15 2008 +0100
@@ -0,0 +1,57 @@
+from RFC821:
+------------
+
+The following are the SMTP commands:
+
+HELO <SP> <domain> <CRLF>
+MAIL <SP> FROM:<reverse-path> <CRLF>
+RCPT <SP> TO:<forward-path> <CRLF>
+DATA <CRLF>
+RSET <CRLF>
+SEND <SP> FROM:<reverse-path> <CRLF>
+SOML <SP> FROM:<reverse-path> <CRLF>
+SAML <SP> FROM:<reverse-path> <CRLF>
+VRFY <SP> <string> <CRLF>
+EXPN <SP> <string> <CRLF>
+HELP [<SP> <string>] <CRLF>
+NOOP <CRLF>
+QUIT <CRLF>
+TURN <CRLF>
+
+
+4.2.2.  NUMERIC ORDER LIST OF REPLY CODES
+
+211 System status, or system help reply
+214 Help message
+	[Information on how to use the receiver or the meaning of a
+	particular non-standard command; this reply is useful only
+	to the human user]
+220 <domain> Service ready
+221 <domain> Service closing transmission channel
+250 Requested mail action okay, completed
+251 User not local; will forward to <forward-path>
+
+354 Start mail input; end with <CRLF>.<CRLF>
+
+421 <domain> Service not available,
+	 closing transmission channel
+	[This may be a reply to any command if the service knows it
+	must shut down]
+450 Requested mail action not taken: mailbox unavailable
+	[E.g., mailbox busy]
+451 Requested action aborted: local error in processing
+452 Requested action not taken: insufficient system storage
+
+500 Syntax error, command unrecognized
+	[This may include errors such as command line too long]
+501 Syntax error in parameters or arguments
+502 Command not implemented
+503 Bad sequence of commands
+504 Command parameter not implemented
+550 Requested action not taken: mailbox unavailable
+	[E.g., mailbox not found, no access]
+551 User not local; please try <forward-path>
+552 Requested mail action aborted: exceeded storage allocation
+553 Requested action not taken: mailbox name not allowed
+	[E.g., mailbox syntax incorrect]
+554 Transaction failed