[ On Sunday, August 26, 2001 at 19:39:48 (+0200), Andreas Pettersson wrote: ]
> Subject: Re: [Exim] MAIL FROM:<>
>
> If you don't care, then go ahead and break the RFC and reject the empty
> enevelope sender.
That's bad advice even if it is meant as sarcasm.
Please don't reject empty sender addresses even if you don't care to
receive bounces.
More honourable postmasters do care if bounces get delivered and it's
very very very annoying when we can't return an undeliverable message
just because the sender's mostmaster has a cavalier attitude about
e-mail.
We will block your miailer(s) from sending any e-mail to us if you fail
to allow us to return bounces to them. Whether we do that with
rfc-ignorant.org or some other mechanism is irrelevant.
(I've often considered implementing a little hack that creates a
blocking list entry every time a 5xx series error is returned from a
"MAIL FROM:<>" command! If I'm feeling in a good mood when I think of
this I plan a TTL on the entry, but usually I just make it permanent and
require out-of-band intervention to get it removed.)
--
Greg A. Woods
+1 416 218-0098 VE3TCP <gwoods@???> <woods@???>
Planix, Inc. <woods@???>; Secrets of the Weird <woods@???>
