MASQUERADE_AS(example.com)dnl
FEATURE(masquerade_envelope)dnl
FEATURE(masquerade_entire_domain)dnl
MASQUERADE_DOMAIN(example.com)dnl
MAILER(smtp)dnl
MAILER(procmail)dnl
dnl MAILER(cyrusv2)dnl
MAILER(`local')dnl

Aug 25 03:40:32 localhost sendmail[17548]: t7P7eWtl017548: from=www-data, size=192, class=0, nrcpts=1, msgid=<201508250740.t7P7eWtl017548@localhost.localdomain>, relay=www-data@localhost
Aug 25 03:40:32 localhost sm-mta[17549]: t7P7eWBd017549: from=<www-data@localhost.localdomain>, size=431, class=0, nrcpts=1, msgid=<201508250740.t7P7eWtl017548@localhost.localdomain>, proto=ESMTP, daemon=MTA-v4, relay=example [127.0.0.1]
Aug 25 03:40:32 localhost sendmail[17548]: t7P7eWtl017548: to=info@example.com, ctladdr=www-data (33/33), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30192, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (t7P7eWBd017549 Message accepted for delivery)
Aug 25 03:40:32 localhost sm-mta[17551]: t7P7eWBd017549: to=<info@example.com>, ctladdr=<www-data@localhost.localdomain> (33/33), delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=120431, relay=mailstore1.secureserver.net. [72.167.238.32], dsn=5.0.0, stat=Service unavailable
Aug 25 03:40:32 localhost sm-mta[17551]: t7P7eWBd017549: t7P7eWBd017551: DSN: Service unavailable
Aug 25 03:40:33 localhost sm-mta[17551]: t7P7eWBd017551: to=<www-data@localhost.localdomain>, delay=00:00:01, xdelay=00:00:01, mailer=relay, pri=30000, relay=mailstore1.secureserver.net. [72.167.238.32], dsn=5.0.0, stat=Service unavailable
Aug 25 03:40:33 localhost sm-mta[17551]: t7P7eWBd017551: t7P7eWBe017551: return to sender: Service unavailable
Aug 25 03:40:33 localhost sm-mta[17551]: t7P7eWBe017551: to=postmaster, delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30000, relay=mailstore1.secureserver.net., dsn=5.0.0, stat=Service unavailable
Aug 25 03:40:33 localhost sm-mta[17551]: t7P7eWBd017551: Saved message in /var/lib/sendmail/dead.letter