Vadim Vygonets wrote:
>Quoth Suresh Ramasubramanian on Sun, Jan 19, 2003:
>
>
>>ETRN or UUCP
>>
>>
>
>What he said.
>
>In my opinion, UUCP *is* the right tool for this purpose, because
>this problem fits the UUCP model very well.
>
>ETRN requires special routing to be done[0], and it may lose mail
>(which is an anathema to me) in certain cases, like if the client
>issues an ETRN command and, while mail is delivered to it, goes
>offline and another machine with something listening on port 25
>gets the same IP address, while mail is being delivered to the
>domain. In this case, the mail will be incorrectly bounced in
>best case, and misdelivered or lost in worst case (you don't rely
>on arbitrary mail servers on dialups to be open relays *and*
>deliver arbitrary mail correctly, do you?).
>
>Vadik.
>
>[0] The destination server IP address should be known to the
> router that delivers mail to these domains, which is
> non-trivial with dynamic IP addresses. This also requires
> the client to authenticate in some way.
>
>
(Safe) ETRN requires static IP (as provided in the discussed case).
Yet another option (beside UUCP) for dialup links is ATRN (Authenticated
Turn) implemented by some MTAs (MS ?).
