1

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                   The mail system

<salahdineelhassnaou55i@gmail.com>: host
    gmail-smtp-in.l.google.com[64.233.167.27] said: 550-5.1.1 The email account
    that you tried to reach does not exist. Please try 550-5.1.1
    double-checking the recipient's email address for typos or 550-5.1.1
    unnecessary spaces. Learn more at 550 5.1.1
    https://support.google.com/mail/?p=NoSuchUser 7-v6si8057303wrp.401 - gsmtp
    (in reply to RCPT TO command)
Reporting-MTA: dns; sortant-01.o2switch.net
X-Postfix-Queue-ID: DFAFC162F67E3
X-Postfix-Sender: rfc822; contact@kharitati.net
Arrival-Date: Wed,  2 May 2018 00:17:02 +0200 (CEST)

Final-Recipient: rfc822; salahdineelhassnaou55i@gmail.com
Original-Recipient: rfc822;salahdineelhassnaou55i@gmail.com
Action: failed
Status: 5.1.1
Remote-MTA: dns; gmail-smtp-in.l.google.com
Diagnostic-Code: smtp; 550-5.1.1 The email account that you tried to reach does
    not exist. Please try 550-5.1.1 double-checking the recipient's email
    address for typos or 550-5.1.1 unnecessary spaces. Learn more at 550 5.1.1
    https://support.google.com/mail/?p=NoSuchUser 7-v6si8057303wrp.401 - gsmtp