Sep  1 05:14:47 usloft5167 postfix/smtpd[25361]: connect from unknown[113.160.112.52]
Sep  1 05:14:48 usloft5167 plesk_saslauthd[26433]: listen=6, status=5, dbpath='/var/spool/postfix/plesk/passwd.db', keypath='/var/spool/postfix/plesk/passwd_db_key', chroot=0, unprivileged=1
Sep  1 05:14:48 usloft5167 plesk_saslauthd[26433]: privileges set to (89:89) (effective 89:89)
Sep  1 05:14:48 usloft5167 plesk_saslauthd[26433]: failed mail authenticatication attempt for user 'room' (password len=7)
Sep  1 05:14:48 usloft5167 postfix/smtpd[25361]: warning: unknown[113.160.112.52]: SASL LOGIN authentication failed: authentication failure
Sep  1 05:14:48 usloft5167 postfix/smtpd[25361]: disconnect from unknown[113.160.112.52]
Sep  1 05:15:08 usloft5167 postfix/smtpd[24028]: connect from unknown[111.67.192.5]
Sep  1 05:15:09 usloft5167 plesk_saslauthd[26433]: failed mail authenticatication attempt for user 'samantha' (password len=7)
Sep  1 05:15:09 usloft5167 postfix/smtpd[24028]: warning: unknown[111.67.192.5]: SASL LOGIN authentication failed: authentication failure
Sep  1 05:15:09 usloft5167 postfix/smtpd[24028]: disconnect from unknown[111.67.192.5]
Sep  1 05:15:27 usloft5167 postfix/smtpd[24871]: connect from unknown[52.169.26.62]
Sep  1 05:15:28 usloft5167 plesk_saslauthd[26433]: failed mail authenticatication attempt for user
sandi' (password len=7)
Sep  1 05:15:28 usloft5167 postfix/smtpd[24871]: warning: unknown[52.169.26.62]: SASL LOGIN authent
cation failed: authentication failure
Sep  1 05:15:28 usloft5167 postfix/smtpd[24871]: disconnect from unknown[52.169.26.62]
Sep  1 05:15:49 usloft5167 postfix/smtpd[25361]: connect from unknown[197.159.191.5]
Sep  1 05:15:51 usloft5167 plesk_saslauthd[26433]: failed mail authenticatication attempt for user 'sesame' (password len=7)
Sep  1 05:15:51 usloft5167 postfix/smtpd[25361]: warning: unknown[197.159.191.5]: SASL LOGIN authentication failed: authentication failure
Sep  1 05:15:51 usloft5167 postfix/smtpd[25361]: disconnect from unknown[197.159.191.5]
Sep  1 05:16:22 usloft5167 postfix/smtp[26581]: 0DB59205AB683: to=<niveacoppe@pop.com.br>, relay=none, delay=29639, delays=29639/0.01/0/0, dsn=4.4.3, status=deferred (Host or domain name not found. Name service error for name=pop.com.br type=MX: Host not found, try again)
Sep  1 05:16:22 usloft5167 postfix/smtp[26582]: A358222D5DB6A: to=<hellzinbg@gmail.com>, relay=none, delay=4528, delays=4528/0.03/0/0, dsn=4.4.3, status=deferred (Host or domain name not found. Name service error for name=gmail.com type=MX: Host not found, try again)
Sep  1 05:16:22 usloft5167 postfix/smtp[26581]: A7183201A2E99: to=<rsp.geek@gmail.com>, relay=none, delay=2142, delays=2142/0.03/0/0, dsn=4.4.3, status=deferred (Host or domain name not found. Name service error for name=gmail.com type=MX: Host not found, try again)
Sep  1 05:16:22 usloft5167 postfix/smtp[26582]: F277020125F78: to=<rsp.geek@gmail.com>, relay=none, delay=2235, delays=2235/0.03/0/0, dsn=4.4.3, status=deferred (Host or domain name not found. Name service error for name=gmail.com type=MX: Host not found, try again)
Sep  1 05:16:31 usloft5167 postfix/smtpd[24871]: connect from unknown[200.188.141.74]
Sep  1 05:16:32 usloft5167 plesk_saslauthd[26433]: failed mail authenticatication attempt for user 'ship' (password len=7)
Sep  1 05:16:32 usloft5167 postfix/smtpd[24871]: warning: unknown[200.188.141.74]: SASL LOGIN authentication failed: authentication failure
Sep  1 05:16:32 usloft5167 postfix/smtpd[24871]: disconnect from unknown[200.188.141.74]