17 REPLY AUTH 334 EXTERNAL supported
18 REPLY = 235 Authenticated
29 SMTP external authentication without credentials
35 'smtp://;AUTH=EXTERNAL@%HOSTIP:%SMTPPORT/943' --mail-rcpt recipient@example.com --mail-from sender@example.com -T -
40 # Verify data after the test has been "shot"
46 MAIL FROM:<sender@example.com>
47 RCPT TO:<recipient@example.com>