When I read my apache access log, I found thise strange lines :
200.51.38.2 - - [01/Sep/2004:21:41:55 +0700] "POST http://200.51.38.2:25/ HTTP/1.0" 200 1114 "-" "-"
168.61.4.12 - - [01/Sep/2004:22:56:03 +0700] "POST http://168.61.5.196:25/ HTTP/1.0" 200 1114 "-" "-"
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As far as I know, these lines told us that my apache server is used by somebody on 200.51.38.2 and 168.61.4.12, posting something to another smtp server, and the smtp server replies OK. Is this a new way to send spam ? anybody can tell how to fix this ?