SMTP SMTP AUTH DIGEST-MD5 RFC2831 RFC4954 # # Server-side AUTH DIGEST-MD5 REPLY AUTH 334 Rubbish REPLY * 501 AUTH exchange cancelled by client # # Client-side smtp debug crypto SMTP DIGEST-MD5 graceful cancellation smtp://%HOSTIP:%SMTPPORT/934 --mail-rcpt recipient@example.com --mail-from sender@example.com -u user:secret -T - # # Verify data after the test has been "shot" # 67 - CURLE_LOGIN_DENIED 67 EHLO 934 AUTH DIGEST-MD5 * QUIT