root@mail [~]# cat /var/log/exim_mainlog | grep saipul
2018-07-19 09:05:06 1ffyJW-00076s-L0 <= testcbn@asiaparts-indotech.com H=([202.158.114.136]) [127.0.0.1]:39087 P=esmtpa A=dovecot_login:testcbn@asiaparts-indotech.com S=787 id=f8c9dc6ed0b4997e06d046da805f5d70.squirrel@202.158.114.136 T="email via webmail" for saipul.alam7@outlook.com
2018-07-19 09:05:06 1ffyJW-00076s-L0 SMTP connection outbound 1531965906 1ffyJW-00076s-L0 asiaparts-indotech.com saipul.alam7@outlook.com
2018-07-19 09:05:11 1ffyJW-00076s-L0 => saipul.alam7@outlook.com R=dkim_lookuphost T=dkim_remote_smtp H=outlook-com.olc.protection.outlook.com [104.47.14.33] X=TLSv1:AES256-SHA:256 CV=no C="250 2.6.0 <f8c9dc6ed0b4997e06d046da805f5d70.squirrel@202.158.114.136> [InternalId=18352395259866, Hostname=VI1EUR04HT085.eop-eur04.prod.protection.outlook.com] 9712 bytes in 1.593, 5.953 KB/sec Queued mail for delivery -> 250 2.1.5"
root@mail [~]# exim -bpc