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Posted by Jerry Stuckle on 09/18/07 10:26
Sanders Kaufman wrote:
> Jerry Stuckle wrote:
>> Sanders Kaufman wrote:
>
>>> I like the way you wobble back and forth on that.
>>> It's not a realy - except when it is.
>>
>> Nope, I stand that most public MTA's are not relays.
>
> OK, Jerry - but that requires a very wrong interpretation of the word
> "Transfer".
>
No, it doesn't. Transfer can take many forms. Relay is only one of them.
> Seriously - on this I consider myself an honest expert. Back in 95, I
> built the first Fax-Over-IP protocol, as you've heard me say once or
> twice before.
>
Hmmm, you've already shown you don't understand the difference between
"relay" and "delivery", don't know a POP server cannot receive SMTP
email, or an MTA cannot handle POP3 protocol.
> In that effort, I spent a year *constantly* consulting with Marshall
> Rose and he gave me an excellent education on this. If you don't know
> who he is, check the SMTP specification; his name is on it.
>
I think you need to go back to school. I've been setting up MTA's, POP3
servers, etc. for quite a number of years. How many have you set up
from scratch?
> I can't claim his expertise as my own - but when you consider that MTA
> stands for Message Transfer Agent, the truth that it is a relay becomes
> quite self-evident.
>
Obviously. And you obviously can look up MTA in Wikipedia. But you
need to understand what it means.
>
>>> That last, of course, is why I suggested that the OP use an SSL
>>> secured mail relay.
>>
>> Which has absolutely no effect on whether the relay is secure or not.
>> All SSL does is encrypt the data.
>
> Wow - could you BE more self-contradictory?
>
Not at all contradictory. SSL just ensures the data sent between MTA's
is secure, not an MTA itself. The MTA can still be compromised, and if
it is the destination MTA, the data will be available unencrypted.
>
>> When an MTA receives a message and places it in a POP (or IMAP)
>> mailbox, it is called "Delivery", not relay. Relay is used to
>> indicate passing on to another MTA.
>
> And how does it get from the outgoing MTA, to the incoming MTA? Relay.
> Thus - an MTA that does not relay, is merely a POP.
>
Nope. Straight SMTP protocol. There is no no relay involved because
the two communicate directly. Relaying is done through a third party.
> btw - it would be more accurate for you to say POP3 Server, because POP
> has a very specific tele-communications networking meaning beyond
> internet email.
Yes, I know. Lots of terms and acronyms have different meanings when
used in different contexts. This is not a telecommunications newsgroup.
And, POP is also correct. It describes a generic type of protocol. POP3
specifies a specific implementation of that protocol.
And you have a LOT to learn about this subject, Sanders.
--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attglobal.net
==================
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