SMTP
#
# Server-side
#
# Client-side
smtp
SMTP with invalid --mail-rcpt
From: different
To: another
body
smtp://%HOSTIP:%SMTPPORT/916 --mail-rcpt invalid --mail-from sender@example.com -T -
#
# Verify data after the test has been "shot"
# 55 - CURLE_SEND_ERROR
55
EHLO 916
MAIL FROM:
RCPT TO:
QUIT