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how can i get the mx record in dns and query to dns server?

hi~

i am making the sending mail program
i succeeded sending a email via socket 25port

if anyone's mail address is xx*@yahoo.com,
i have to find the mailserver of yahoo.com
so i have to query to the dns server

on win2000 command prompt
i typed "nslookup -type=mx yahoo.com"
then i know a lot of mx records

how can i get the mx records in program via socket?
how can i querty to the dns server in program via socket?

anyone help me~~~
thanks...

Nov 15 '05 #1
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