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List:       ipcop-user
Subject:    Re: [IPCop-user] OT : DNS 101
From:       David Taylor <daveytay () paradise ! net ! nz>
Date:       2007-07-30 7:03:58
Message-ID: 001401c7d277$cd649250$c800a8c0 () bigfrank07
[Download RAW message or body]

> 
> If you telnet to a host, it doesn't matter what normal use the port you
> choose to use is doing, it will still connect to the 'standard' host which
> the name resolves to.
> 
> ping example.com
> [returns 1.1.1.1 for the resolved IP]
> 
> telnet example.com [any port whatsoever]
> [still returns 1.1.1.1 for the resolved IP]
> 
> An email program will look for the MX record, telnet IS NOT an email
> program
> even though you can interact with the email server using it.
> 

The OP should also note that nslookup and other command line tools that
query DNS have a mode (type) switch.  This is so you can lookup MX for
instance.  I forget the details but google will know.


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