Re: [exim4] mixed up about terminology
On 10/16/2014 9:25 PM, lee wrote:
> Jerry Stuckle <jstuckle@attglobal.net> writes:
>
>> On 10/12/2014 10:24 PM, lee wrote:
>>> Jerry Stuckle <jstuckle@attglobal.net> writes:
>>>
>>>> Among other things, legitimate MTAs have MX records. Anti-spam routines
>>>
>>> Who prevents a MUA from having an MX record and sending a HELO that
>>> matches the RDNS entry? And what are these "other things" you're
>>> referring to?
>>>
>>>
>>
>> An MUA cannot receive email - which is the purpose of the MX record.
>> Such an entry would be incorrect in the DNS.
>
> lol
>
> The entry isn't related to a MUA in any way. Who prevents you from
> using a MUA on a machine the IP address of which is obtained when
> requesting the MX entry for a particular domain?
>
>> But if you understood anything about MTAs, you wouldn't have to ask this
>> question.
>
> Yeah, sure, lol ...
>
>
You obviously don't understand. MX records identify MTAs - that is,
machines which can receive email. MUAs cannot do that.
To identify an MUA with an MX record would be a violation of the domain
name system.
Jerry
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