mail server misbrug?

kiggede min mail server igennem i dag og fandt dette, nogle der prøver at sende mail igennem min server, men det ser da lidt vildt ud at der sker hvert sekundt, er der mere jeg kan gøre end at sætte den op som jeg har gjort ( spamm sikker)???

Mon 2002-03-04 19:30:14: [604:7770] Can't accept or relay message.
Mon 2002-03-04 19:30:14: [604:7770] Sender not authenticated or from trusted domain/IP and recipient not a valid local account.
Mon 2002-03-04 19:30:14: [604:7770] 550 <brad4657@lodoss.org>, Recipient unknown
Mon 2002-03-04 19:30:15: [604:7770] RCPT To:<mandy23_2002@lodoss.org>
Mon 2002-03-04 19:30:15: [604:7770] Can't accept or relay message.
Mon 2002-03-04 19:30:15: [604:7770] Sender not authenticated or from trusted domain/IP and recipient not a valid local account.
Mon 2002-03-04 19:30:15: [604:7770] 550 <mandy23_2002@lodoss.org>, Recipient unknown
Mon 2002-03-04 19:30:15: [604:7770] RCPT To:<pedro964@4selfhelp.com>
Mon 2002-03-04 19:30:15: [604:7770] Can't accept or relay message.
Mon 2002-03-04 19:30:15: [604:7770] Sender not authenticated or from trusted domain/IP and recipient not a valid local account.
Mon 2002-03-04 19:30:15: [604:7770] 550 <pedro964@4selfhelp.com>, Recipient unknown
Mon 2002-03-04 19:30:16: [604:7770] RCPT To:<fred46_2002@yahoo.com>
Mon 2002-03-04 19:30:16: [604:7770] Can't accept or relay message.
Mon 2002-03-04 19:30:16: [604:7770] Sender not authenticated or from trusted domain/IP and recipient not a valid local account.
Mon 2002-03-04 19:30:16: [604:7770] 550 <fred46_2002@yahoo.com>, Recipient unknown
Mon 2002-03-04 19:30:16: [604:7770] RCPT To:<carlos675@4selfhelp.com>
Mon 2002-03-04 19:30:16: [604:7770] Can't accept or relay message.
Mon 2002-03-04 19:30:16: [604:7770] Sender not authenticated or from trusted domain/IP and recipient not a valid local account.
Mon 2002-03-04 19:30:16: [604:7770] 550 <carlos675@4selfhelp.com>, Recipient unknown
Mon 2002-03-04 19:30:16: [604:7770] RCPT To:<jaime567@4b2b.com>
Mon 2002-03-04 19:30:16: [604:7770] Can't accept or relay message.
Mon 2002-03-04 19:30:16: [604:7770] Sender not authenticated or from trusted domain/IP and recipient not a valid local account.
Mon 2002-03-04 19:30:16: [604:7770] 550 <jaime567@4b2b.com>, Recipient unknown
Mon 2002-03-04 19:30:17: [604:7770] RCPT To:<alberto7564@sv2.net>
Mon 2002-03-04 19:30:17: [604:7770] Can't accept or relay message.
Mon 2002-03-04 19:30:17: [604:7770] Sender not authenticated or from trusted domain/IP and recipient not a valid local account.
Mon 2002-03-04 19:30:17: [604:7770] 550 <alberto7564@sv2.net>, Recipient unknown
Mon 2002-03-04 19:30:17: [604:7770] RCPT To:<ted087@4selfhelp.com>
Mon 2002-03-04 19:30:17: [604:7770] Can't accept or relay message.
Mon 2002-03-04 19:30:17: [604:7770] Sender not authenticated or from trusted domain/IP and recipient not a valid local account.
Mon 2002-03-04 19:30:17: [604:7770] 550 <ted087@4selfhelp.com>, Recipient unknown
Mon 2002-03-04 19:30:17: [604:7770] RCPT To:<ben8_2001@4selfhelp.com>
Mon 2002-03-04 19:30:17: [604:7770] Can't accept or relay message.
Mon 2002-03-04 19:30:17: [604:7770] Sender not authenticated or from trusted domain/IP and recipient not a valid local account.
Mon 2002-03-04 19:30:17: [604:7770] 550 <ben8_2001@4selfhelp.com>, Recipient unknown
Mon 2002-03-04 19:30:18: [604:7770] RCPT To:<cassandra456@4b2b.com>
Mon 2002-03-04 19:30:18: [604:7770] Can't accept or relay message.
Mon 2002-03-04 19:30:18: [604:7770] Sender not authenticated or from trusted domain/IP and recipient not a valid local account.
Mon 2002-03-04 19:30:18: [604:7770] 550 <cassandra456@4b2b.com>, Recipient unknown
Mon 2002-03-04 19:30:18: [604:7770] RCPT To:<martha5678@4b2b.com>
Mon 2002-03-04 19:30:18: [604:7770] Can't accept or relay message.
Mon 2002-03-04 19:30:18: [604:7770] Sender not authenticated or from trusted domain/IP and recipient not a valid local account.
Mon 2002-03-04 19:30:18: [604:7770] 550 <martha5678@4b2b.com>, Recipient unknown
Mon 2002-03-04 19:30:18: [604:7770] RCPT To:<irene4657@lodoss.org>
Mon 2002-03-04 19:30:18: [604:7770] Can't accept or relay message.
Mon 2002-03-04 19:30:18: [604:7770] Sender not authenticated or from trusted domain/IP and recipient not a valid local account.
Mon 2002-03-04 19:30:18: [604:7770] 550 <irene4657@lodoss.org>, Recipient unknown
Mon 2002-03-04 19:30:19: [604:7770] RCPT To:<alfred8978@lodoss.org>
Mon 2002-03-04 19:30:19: [604:7770] Can't accept or relay message.
Mon 2002-03-04 19:30:19: [604:7770] Sender not authenticated or from trusted domain/IP and recipient not a valid local account.
Mon 2002-03-04 19:30:19: [604:7770] 550 <alfred8978@lodoss.org>, Recipient unknown
Mon 2002-03-04 19:30:19: [604:7770] RCPT To:<scott975@4selfhelp.com>
Mon 2002-03-04 19:30:19: [604:7770] Can't accept or relay message.
Mon 2002-03-04 19:30:19: [604:7770] Sender not authenticated or from trusted domain/IP and recipient not a valid local account.
Mon 2002-03-04 19:30:19: [604:7770] 550 <scott975@4selfhelp.com>, Recipient unknown
Mon 2002-03-04 19:30:20: [604:7770] RCPT To:<henson5645@4b2b.com>
Mon 2002-03-04 19:30:20: [604:7770] Can't accept or relay message.
Mon 2002-03-04 19:30:20: [604:7770] Sender not authenticated or from trusted domain/IP and recipient not a valid local account.
Mon 2002-03-04 19:30:20: [604:7770] 550 <henson5645@4b2b.com>, Recipient unknown
Mon 2002-03-04 19:30:20: [604:7770] RCPT To:<tery6745@sv2.net>
Mon 2002-03-04 19:30:20: [604:7770] Can't accept or relay message.
Mon 2002-03-04 19:30:20: [604:7770] Sender not authenticated or from trusted domain/IP and recipient not a valid local account.
Mon 2002-03-04 19:30:20: [604:7770] 550 <tery6745@sv2.net>, Recipient unknown
Mon 2002-03-04 19:30:22: [604:7770] RCPT To:<svetlana798@lodoss.org>
Mon 2002-03-04 19:30:22: [604:7770] Can't accept or relay message.
Mon 2002-03-04 19:30:22: [604:7770] Sender not authenticated or from trusted domain/IP and recipient not a valid local account.
Mon 2002-03-04 19:30:22: [604:7770] 550 <svetlana798@lodoss.org>, Recipient unknown
Mon 2002-03-04 19:30:23: [604:7770] RCPT To:<julios468@4selfhelp.com>
Mon 2002-03-04 19:30:23: [604:7770] Can't accept or relay message.
Mon 2002-03-04 19:30:23: [604:7770] Sender not authenticated or from trusted domain/IP and recipient not a valid local account.
Mon 2002-03-04 19:30:23: [604:7770] 550 <julios468@4selfhelp.com>, Recipient unknown
Mon 2002-03-04 19:30:23: [604:7770] RCPT To:<rosalio_234@4b2b.com>
Mon 2002-03-04 19:30:23: [604:7770] Can't accept or relay message.
Mon 2002-03-04 19:30:23: [604:7770] Sender not authenticated or from trusted domain/IP and recipient not a valid local account.
Mon 2002-03-04 19:30:23: [604:7770] 550 <rosalio_234@4b2b.com>, Recipient unknown
Mon 2002-03-04 19:30:23: [604:7770] RCPT To:<jack9567@lodoss.org>
Mon 2002-03-04 19:30:23: [604:7770] Can't accept or relay message.
Mon 2002-03-04 19:30:23: [604:7770] Sender not authenticated or from trusted domain/IP and recipient not a valid local account.
Mon 2002-03-04 19:30:23: [604:7770] 550 <jack9567@lodoss.org>, Recipient unknown
Mon 2002-03-04 19:30:24: [604:7770] RCPT To:<alice8_2002@yahoo.com>
Mon 2002-03-04 19:30:24: [604:7770] Can't accept or relay message.
Mon 2002-03-04 19:30:24: [604:777