[root@web ~]# tail -n 20  /var/log/exim_mainlog
2019-02-28 23:27:27 1gz6Tp-0002mO-0c Message is frozen
2019-02-28 23:27:27 End queue run: pid=2892
2019-02-28 23:28:03 SMTP connection from [::1]:54092 (TCP/IP connection count = 1)
2019-02-28 23:28:03 1gzOXT-0000n2-Bg <= testcbn2@wellcommshop.com H=(web.wellcommshop.com) [::1]:54092 P=esmtpa A=dovecot_login:testcbn2@wellcommshop.com S=616 id=cd3f3c5049f3576c3dd7e2281eb764bc@wellcommshop.com T="percobaan relay" for januar.timi@maxplus.co.id
2019-02-28 23:28:03 SMTP connection from (web.wellcommshop.com) [::1]:54092 closed by QUIT
2019-02-28 23:28:03 cwd=/var/spool/exim 3 args: /usr/sbin/exim -Mc 1gzOXT-0000n2-Bg
2019-02-28 23:28:03 1gzOXT-0000n2-Bg Sender identification U=wellcomm D=wellcommshop.com S=testcbn2@wellcommshop.com
2019-02-28 23:28:03 1gzOXT-0000n2-Bg SMTP connection outbound 1551371283 1gzOXT-0000n2-Bg wellcommshop.com januar.timi@maxplus.co.id
2019-02-28 23:28:04 1gzOXT-0000n2-Bg ** januar.timi@maxplus.co.id R=lookuphost T=remote_smtp H=aspmx.l.google.com [74.125.68.27] X=TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128 CV=yes: SMTP error from remote mail server after end of data: 550-5.7.1 This message does not have authentication information or fails to pass\n550-5.7.1 authentication checks. To best protect our users from spam, the\n550-5.7.1 message has been blocked. Please visit\n550-5.7.1  https://support.google.com/mail/answer/81126#authentication for more\n550 5.7.1 information. b2si18815984pfm.26 - gsmtp
2019-02-28 23:28:04 cwd=/var/spool/exim 7 args: /usr/sbin/exim -t -oem -oi -f <> -E1gzOXT-0000n2-Bg
2019-02-28 23:28:04 1gzOXU-0000nG-OE <= <> R=1gzOXT-0000n2-Bg U=mailnull P=local S=2704 T="Mail delivery failed: returning message to sender" for testcbn2@wellcommshop.com
2019-02-28 23:28:04 1gzOXT-0000n2-Bg Completed
2019-02-28 23:28:04 cwd=/var/spool/exim 3 args: /usr/sbin/exim -Mc 1gzOXU-0000nG-OE
2019-02-28 23:28:04 1gzOXU-0000nG-OE => testcbn2 <testcbn2@wellcommshop.com> R=virtual_user T=dovecot_virtual_delivery C="250 2.0.0 <testcbn2@wellcommshop.com> CeN5MhQMeFz1CwAAa/Iyqg Saved"
2019-02-28 23:28:04 1gzOXU-0000nG-OE Completed
2019-02-28 23:29:17 SMTP connection from [37.49.224.153]:56664 (TCP/IP connection count = 1)
2019-02-28 23:29:17 no host name found for IP address 37.49.224.153
2019-02-28 23:29:32 SMTP connection from [37.49.224.153]:56664 lost D=15s
2019-02-28 23:29:35 cwd=/root 2 args: exim -bpc
2019-02-28 23:29:38 cwd=/root 2 args: exim -bp