North American Network Operators Group
Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical

Re: Mailserver requirements

  • From: Arnold Nipper
  • Date: Mon Apr 05 17:56:43 2004 
On 05.04.2004 23:42 Daniel Roesen wrote:

> On Mon, Apr 05, 2004 at 11:32:08PM +0200, Arnold Nipper wrote:
> 
>>>	I am surprised you don't have problems sending to AOL as well.
>>>They don't accept email from servers that do not have reverse addresses.
>>>I don't accept email from severs without reverse addressing. 	
>>
>>of course this server does have a reverse mapping. But this reverse
>>mapped doamin does not have an MX record.
> 
> 
> Does it have an A RR?
> 

It also does have an A RR. And the forward mapping does also match the
IP address.

> Anyway... it's a heuristic which definately does give false positives.
> The only requirement is that IF a domain/host accepts mail there MUST be
> a [email protected] address.
> 

In this case the host *sends* mail ...



Arnold