Jan  5 15:49:40 mail-master postfix/smtp[23438]: 4C3A4425049: to=<lombardo.al3ssandro@gmail.com>, relay=127.0.0.1[127.0.0.1]:10026, delay=0.19, delays=0.05/0/0/0.14, dsn=2.0.0, status=sent (250 2.0.0 from MTA(smtp:[127.0.0.1]:10030): 250 2.0.0 Ok: queued as 6C04342511E)
Jan  5 15:49:40 mail-master postfix/smtp[23670]: 6C04342511E: to=<lombardo.al3ssandro@gmail.com>, relay=127.0.0.1[127.0.0.1]:10032, delay=0.36, delays=0.04/0/0.01/0.31, dsn=2.0.0, status=sent (250 2.0.0 from MTA(smtp:[127.0.0.1]:10025): 250 2.0.0 Ok: queued as BEA13425049)
Jan  5 15:49:42 mail-master postfix/smtp[24398]: BEA13425049: to=<lombardo.al3ssandro@gmail.com>, relay=gmail-smtp-in.l.google.com[74.125.133.27]:25, delay=1.4, delays=0.01/0.01/0.52/0.83, dsn=2.0.0, status=sent (250 2.0.0 OK 1452005382 o123si5764107wmd.53 - gsmtp)





-Messaggio originale-----
Da: Mail Delivery System [mailto:MAILER-DAEMON@mail-master.merimp.com]
Inviato: venerdì 18 dicembre 2015 16:36
A: distefano.ada@atsolutions.it
Oggetto: Undelivered Mail Returned to Sender

This is the mail system at host mail-master.merimp.com.

I'm sorry to have to inform you that your message could not be delivered to
one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can delete your own
text from the attached returned message.

                   The mail system

<daniela.mauri71@gmail.com>: host
alt1.gmail-smtp-in.l.google.com[74.125.68.26]
    said: 421-4.7.0 [188.152.216.218      15] Our system has detected an
    unusual rate of 421-4.7.0 unsolicited mail originating from your IP
    address. To protect our 421-4.7.0 users from spam, mail sent from your
IP
    address has been temporarily 421-4.7.0 rate limited. Please visit
421-4.7.0
    https://support.google.com/mail/answer/81126 to review our Bulk Email
421
    4.7.0 Senders Guidelines. of5si15028284oeb.46 - gsmtp (in reply to end
of
    DATA command)