How do we do DNS query in Python -


how dns query, expecially mx query, in python not installing third party libs.

i want query mx record domain, however, seems socket.getaddrinfo can query record.

i have tried this:

python -c "import socket; print socket.getaddrinfo('baidu.com', 25, socket.af_inet, socket.sock_dgram)"

this prints 

[(2, 2, 17, '', ('220.181.57.217', 25)), (2, 2, 17, '', ('123.125.114.144', 25)), (2, 2, 17, '', ('180.149.132.47', 25))]

however, can not telnet telnet 220.181.57.217 25 or telnet 123.125.114.144 25 or telnet 180.149.132.47 25.

first install dnspython

import dns.resolver  answers = dns.resolver.query('dnspython.org', 'mx') rdata in answers:     print 'host', rdata.exchange, 'has preference', rdata.preference

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