R: 220 BERKELEY.ARPA Simple Mail Transfer Service Ready S: HELO USC-ISIF.ARPA R: 250 BERKELEY.ARPA S: MAIL FROM:<Postel@USC-ISIF.ARPA> R: 250 OK S: RCPT TO:<fabry@BERKELEY.ARPA> R: 250 OK S: RCPT TO:<eric@BERKELEY.ARPA> R: 552 Recipient storage full, try again in another transaction S: DATA R: 354 Start mail input; end with <CRLF>.<CRLF> S: Blah blah blah... S: ...etc. etc. etc. S: . R: 250 OK S: MAIL FROM:<Postel@USC-ISIF.ARPA> R: 250 OK S: RCPT TO:<eric@BERKELEY.ARPA> R: 250 OK S: DATA R: 354 Start mail input; end with <CRLF>.<CRLF> S: Blah blah blah... S: ...etc. etc. etc. S: . R: 250 OK S: QUIT R: 221 BERKELEY.ARPA Service closing transmission channel Scenario 10
Note that a real implementation must handle many recipients as specified in Section 4.5.3.