[ On Sunday, August 26, 2001 at 20:06:49 (+0300), Lauri Tischler wrote: ]
> Subject: Re: [Exim] MAIL FROM:<>
>
> If I understand this right, the admin who is trying to protect his
> network fron unnamed spammers is made the villain.
No, the idiot who doesn't understand SMTP and who doesn't understand
that he's blocking *ALL* bounces to his users, *IS* the villain here.
> Why should anybody accept any mail without excisting from address.
Because that's what you have to do if you want to honour SMTP and allow
bounces!
> Immediately upon recieving a message, any sane MTA should check that the
> sender is valid, if not then dump the message.
Sure, and you can even do it immediately upon receiving the "MAIL FROM:"
command.
However '<>' is a VERY valid sender address! In fact it is THE MOST
VALID sender address possible! It's only two characters long (or zero
characters long, depending on how you look at it, and it requires no
external information to validate (because it is always valid!).
If you want to block spammers then please use more appropriate and
accurate mechanisms that don't block valid bounces and cause postmasters
like myself to have to hate every idiot who blocks bounces and causes our
frozen error queues to pile up with them. Grrrr.....
--
Greg A. Woods
+1 416 218-0098 VE3TCP <gwoods@???> <woods@???>
Planix, Inc. <woods@???>; Secrets of the Weird <woods@???>
