· 10 years ago · Nov 15, 2015, 09:33 AM
1root@eclipse:/var/lib/mysql# telnet gmail-smtp-in.l.google.com 25
2Trying 2607:f8b0:400d:c02::1a...
3Connected to gmail-smtp-in.l.google.com.
4Escape character is '^]'.
5220 mx.google.com ESMTP d72si22370812qhc.8 - gsmtp
6helo gmail.com
7250 mx.google.com at your service
8mail from: <me@gmail.com>
9250 2.1.0 OK d72si22370812qhc.8 - gsmtp
10rcpt to: <somenonexistinguser@gmail.com>
11550-5.1.1 The email account that you tried to reach does not exist. Please try
12550-5.1.1 double-checking the recipient's email address for typos or
13550-5.1.1 unnecessary spaces. Learn more at
14550 5.1.1 https://support.google.com/mail/answer/6596 d72si22370812qhc.8 - gsmtp