220 
250-Hello, pleased to meet you
250-ENHANCEDSTATUSCODES
250-PIPELINING
250-EXPN
250-VERB
250-8BITMIME
250-SIZE
250-DSN
250-ETRN
250-STARTTLS
250-DELIVERBY
250 HELP
220 Ready to start TLS
250-Hello, pleased to meet you
250-ENHANCEDSTATUSCODES
250-PIPELINING
250-EXPN
250-VERB
250-8BITMIME
250-SIZE
250-DSN
250-ETRN
250-DELIVERBY
250 HELP
250 Reset state
250 Sender ok
250 Recipient ok
354 Enter mail, end with "." on a line by itself
250 Message accepted for delivery
221 closing connection