Re: Email & PTR Issues

2017-11-08 Thread Barry Margolin
In article ,
 Matthew Pounsett  wrote:

> I'm presuming swbell.net is your ISP.  You either need to get them to
> delegate reverse DNS for your address block to you, or have them set up the
> PTR record(s) you require in their DNS.

If you have residential Internet service, I'd estimate the chances of 
either to be 0%. This kind of thing is generally only provided to 
business accounts.

What's strange, though, is that they don't have some kind of generic 
reverse DNS for the address. Like my Comcast IP has reverse DNS that 
resolves to c-71-192-114-133.hsd1.ma.comcast.net.

-- 
Barry Margolin
Arlington, MA
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search algorithm in DNS

2017-11-08 Thread Munhbaatar Doctor via bind-users
I am Munkhbaatar, a master course student studying on mechanism and algorithm 
of DNS.I want to search algorithm in DNS, but i have not found the documents 
clearly explaining this on the web.I guess it's just a "list search", but I am 
not sure.Please tell me the details of the search algorithm. ___
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question

2017-11-08 Thread Munhbaatar Doctor via bind-users
I am Munkhbaatar, a master course student studying on mechanism and algorithm 
of DNS.I want to search algorithm in DNS, but i have not found the documents 
clearly explaining this on the web.I guess it's just a "list search", but I am 
not sure.Please tell me the details of the search algorithm. 
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Re: search algorithm in DNS

2017-11-08 Thread John Levine
In article  you write:
>-=-=-=-=-=-
>
>I am Munkhbaatar, a master course student studying on mechanism and algorithm 
>of DNS.I want to search algorithm in DNS, but
>i have not found the documents clearly explaining this on the web.I guess it's 
>just a "list search", but I am not
>sure.Please tell me the details of the search algorithm. 

There is no search algorithm, only exact match.  See RFCs 1034, 1035, and 2181.

R's,
John
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