SMTP # # Server-side # the key in this response is that it doesn't include SIZE support REPLY EHLO 250 mooo # # Client-side smtp SMTP without SIZE support From: different To: another body smtp://%HOSTIP:%SMTPPORT/user --mail-rcpt 909@foo --mail-rcpt 909@foobar.example --mail-from 909@from -T log/test909.eml # # Verify data after the test has been "shot" EHLO user MAIL FROM:<909@from> RCPT TO:<909@foo> RCPT TO:<909@foobar.example> DATA QUIT From: different To: another body .