What is this in my logs?

[Joe Sporleder]

I just upgraded from SIMS 1.8b7 to 1.8b9d14, and have started using 
RBLs and also have a couple dozen of my own IP ranges listed in my own 
blacklist. The last few hours, I've started noticing the following 
entries in my logs. wacondatrader.com is one of my domains on my work 
SIMS machine. classicnet.net is a regional cable company being an ISP, 
and kans.com is also a domain I recognize from the region.

24.225.31.83 is a static public IP that my ISP in Hays, KS gave me to 
assign to an Apple Airport Extreme Basestation, that is providing 
routing functions for a couple of iMacs with Airport, plus our Hays 
manager's Wintel machine. I'm fairly certain that "oemcomputer" in this 
log is referring to his machine. Could he possibly have a PC worm or 
virus? It is looking like since about 3:00 p.m. this afternoon, these 
entries have been showing up approximately every 20 minutes.

Joe

15:03:43 3 SMTP-463(oemcomputer) Failed to verify. Real address is 
[24.225.31.83:2125]
15:03:44 4 ROUTER redirected to email(wacondatrader.com) (safe)
15:03:44 1 SMTP-463([24.225.31.83]) SPAM? Recipient 
'<[EMAIL PROTECTED]>' rejected: relaying to [65.83.241.170] is not 
allowed
15:04:17 3 SMTP-464(oemcomputer) Failed to verify. Real address is 
[24.225.31.83:2126]
15:04:17 4 ROUTER redirected to email(wacondatrader.com) (safe)
15:04:18 1 SMTP-464([24.225.31.83]) SPAM? Recipient 
'<[EMAIL PROTECTED]>' rejected: relaying to [65.83.241.170] is not 
allowed
15:04:25 3 SMTP-465(oemcomputer) Failed to verify. Real address is 
[24.225.31.83:2128]

17:24:53 3 SMTP-528(oemcomputer) Failed to verify. Real address is 
[24.225.31.83:2137]
17:24:53 4 ROUTER redirected to email(wacondatrader.com) (safe)
17:24:54 1 SMTP-528([24.225.31.83]) SPAM? Recipient '<[EMAIL PROTECTED]>' 
rejected: relaying to [12.158.35.251] is not allowed
17:26:29 3 SMTP-529(KVSVPROD) Failed to verify. Real address is 
[199.3.212.234:1138]

17:54:59 3 SMTP-536(oemcomputer) Failed to verify. Real address is 
[24.225.31.83:2139]
17:54:59 4 ROUTER redirected to email(wacondatrader.com) (safe)
17:55:00 1 SMTP-536([24.225.31.83]) SPAM? Recipient '<[EMAIL PROTECTED]>' 
rejected: relaying to [12.158.35.251] is not allowed

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