Re: legit mail being blocked because of relay methods

[OK 2 NET - Andr� Paulsberg]

> 3.  The mailserver then contacts teh first server on teh list,
> says "here's an e-mail message", along with a list of addresses (usually 20 or so).
> Sometimes all those addresses are on that server, somtimes not.

I've never seen I mailing list do this,
it not only sounds stupid - it is stupid.


> 4.  To stop spam, the receiver then checks the list for at least one valid receiver.
> if one is local, it delivers it and any other local mails, then
> relays the rest off to the first system in the list left over.

I've never ever seen this behaviour on a relay protected server,
this is in any cirumstance a relay security problem ...


> This system, in the overall scheme of things,
> is designed to reduce traffic across the internet,
> because if your network happens to hose 3 of the domains onteh list,
> it's able to take a lot of traffic off the internet and send it internally instead.
> Also, with mail going out of the country,
> one Australian server would end up relaying to other .au hosts,
> saving taffic over global pipelines.

BULL, there is NO WAY the mailinglist server KNOWS where mail is hosted,
insted of saving bandwith it will waste RANDOM bandwith around the Internet.
There is also NO WAY the mailinglist server knows the queue-status
of all the other servers it would use for "delivery", or their
bandwith capabilities or other neceserry resurcses it might need/use.

Worst case a mailinglist server in US send all .au mail to a server in chile
who is hosting a .au domain for one of it's customers, causing all E-mail to be
sent over several slow lines before being split up and sendt back over the same lines
and over to australia. This server might even be on a 64kbps line and mail
might be delay for several hours if the lines are congested allready,
or if the server has several large outgoing mails in it's queue.

The only one saving bandwidth is the abusive mailinglist server,
who is "living off" all others on the Internet without their permission.


> Qmail is denying legitimate messages to my users because
> it doesn't allow this type of relaying.  Why?

WHAT!

Your server is correctly denying this server from unautherized relaying,
the fact that the server is wronly sending you recipients at the
cost of your CPU and BANDWITH (at least this is what it hopes to do).
should make you wanna kick their butts.


MVH Andr� Paulsberg