SMTP # Server-side # Client-side smtp SMTP with invalid --mail-rcpt and --mail-rcpt-allowfails From: different To: another body smtp://%HOSTIP:%SMTPPORT/%TESTNUMBER --mail-rcpt-allowfails --mail-rcpt invalid.one --mail-from sender@example.com -T - # Verify data after the test has been "shot" # 55 - CURLE_SEND_ERROR 55 EHLO %TESTNUMBER MAIL FROM:%LTsender@example.com%GT RCPT TO:%LTinvalid.one%GT QUIT