Feb 11 19:46:16 libreNMS sendmail[8888]: w1BIkGM0008888: Authentication-Warning: libreNMS: www-data set sender to netland.powiadomienia@gmail.com using -f
Feb 11 19:46:16 libreNMS sendmail[8888]: w1BIkGM0008888: from=netland.powiadomienia@gmail.com, size=343, class=0, nrcpts=1, msgid=<5864b938e62303267d998b6c6f1ef399@libreNMS>, relay=www-data@localhost
Feb 11 19:46:17 libreNMS sm-mta[8929]: w1BIkG4u008929: from=<netland.powiadomienia@gmail.com>, size=567, class=0, nrcpts=1, msgid=<5864b938e62303267d998b6c6f1ef399@libreNMS>, proto=ESMTP, daemon=MTA-v4, relay=libreNMS.net-land.eu [127.0.0.1]
Feb 11 19:46:17 libreNMS sendmail[8888]: w1BIkGM0008888: to=marcin@mirrim.eu, ctladdr=netland.powiadomienia@gmail.com (33/33), delay=00:00:01, xdelay=00:00:01, mailer=relay, pri=30343, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (w1BIkG4u008929 Message accepted for delivery)
Feb 11 19:46:17 libreNMS sm-mta[9027]: STARTTLS=client, relay=mail.mirrim.eu., version=TLSv1.2, verify=FAIL, cipher=ECDHE-RSA-AES256-GCM-SHA384, bits=256/256
Feb 11 19:46:19 libreNMS sm-mta[9027]: w1BIkG4u008929: to=<marcin@mirrim.eu>, delay=00:00:03, xdelay=00:00:02, mailer=esmtp, pri=120567, relay=mail.mirrim.eu. [188.116.35.23], dsn=5.1.1, stat=User unknown
Feb 11 19:46:19 libreNMS sm-mta[9027]: w1BIkG4u008929: w1BIkJ4u009027: DSN: User unknown
Feb 11 19:46:20 libreNMS sm-mta[9027]: STARTTLS=client, relay=gmail-smtp-in.l.google.com., version=TLSv1.2, verify=FAIL, cipher=ECDHE-RSA-CHACHA20-POLY1305, bits=256/256
Feb 11 19:46:20 libreNMS sm-mta[9027]: w1BIkJ4u009027: to=<netland.powiadomienia@gmail.com>, delay=00:00:01, xdelay=00:00:00, mailer=esmtp, pri=30000, relay=gmail-smtp-in.l.google.com. [74.125.131.27], dsn=2.0.0, stat=Sent (OK 1518374780 j23si2399788lja.41 - gsmtp)