x.singnet.com.sg., dsn=4.0.0, stat=Deferred: Name server: bizmx.singnet.com.sg.: host name lookup failure
Apr  5 22:50:41 pt3 sendmail[5125]: l35EofFv005125: from=asterisk, size=16813, class=0, nrcpts=1, msgid=<Asterisk-13-1592388931-101-3974@pt3>, relay=asterisk@localhost
Apr  5 22:50:41 pt3 sendmail[5126]: l35EofNo005126: from=<asterisk@pt3.totalhearingcare.com.sg>, size=16979, class=0, nrcpts=1, msgid=<Asterisk-13-1592388931-101-3974@pt3>, proto=ESMTP, daemon=MTA, relay=pt3.localhost.localdomain [127.0.0.1]
Apr  5 22:50:41 pt3 sendmail[5125]: l35EofFv005125: to="laipeng" <laipeng@totalhearingcare.com.sg>, ctladdr=asterisk (501/501), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=46813, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (l35EofNo005126 Message accepted for delivery)
Apr  5 22:50:46 pt3 sendmail[5128]: l35EofNo005126: to=<laipeng@totalhearingcare.com.sg>, ctladdr=<asterisk@pt3.totalhearingcare.com.sg> (501/501), delay=00:00:05, xdelay=00:00:05, mailer=esmtp, pri=136979, relay=corpmx.singnet.com.sg. [165.21.1.9], dsn=5.1.8, stat=User unknown
Apr  5 22:50:46 pt3 sendmail[5128]: l35EofNo005126: forward /var/lib/asterisk/.forward.pt3: Group writable directory
Apr  5 22:50:46 pt3 sendmail[5128]: l35EofNo005126: forward /var/lib/asterisk/.forward: Group writable directory
Apr  5 22:50:46 pt3 sendmail[5128]: l35EofNo005126: l35EokNo005128: DSN: User unknown
Apr  5 22:50:46 pt3 sendmail[5128]: l35EokNo005128: to=<asterisk@pt3.totalhearingcare.com.sg>, delay=00:00:00, xdelay=00:00:00, mailer=local, pri=48266, dsn=2.0.0, stat=Sent