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C:\>nslookup
Default Server: FJ-DNS.fz.fj.cn
Address: 218.85.157.99
> set type=mx
> gmail.com
Server: FJ-DNS.fz.fj.cn
Address: 218.85.157.99
Non-authoritative answer:
gmail.com MX preference = 10, mail exchanger = alt2.gmail-smtp-in.l.google
.com
gmail.com MX preference = 50, mail exchanger = gsmtp163.google.com
gmail.com MX preference = 50, mail exchanger = gsmtp183.google.com
gmail.com MX preference = 5, mail exchanger = gmail-smtp-in.l.google.com
gmail.com MX preference = 10, mail exchanger = alt1.gmail-smtp-in.l.google
c:>telnet gmail-smtp-in.l.google.com 25
220 mx.google.com ESMTP z20si3751800pod
helo a
250 mx.google.com at your service |
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