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\n2.\u4e3b\u6a5f\u4e0a\u7684 mail \u7cfb\u7d71\u88ab open relay
\n3.\u4f7f\u7528\u4e86\u554f\u984c\u4e0d\u65b7\u7684 sendmail
\n4.\u4e3b\u6a5f\u7684 telnetd \u958b\u555f<\/p>\n
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\nhttp:\/\/spamlinks.net\/prevent-secure-relay<\/font><\/span>–test<\/font><\/span>.htm<\/a>
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\n\u7f8e\u570b\u4f3a\u670d\u5668<\/a>
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