On Tue, Nov 04, 2003 at 04:14:24PM -0500, Greg A. Woods said:
> [ On Tuesday, November 4, 2003 at 08:47:08 (-0500), Walt Reed wrote: ]
> > Subject: Re: [Exim] OT: Problem sending mail to verizon.net
> >
> > The Verizon postmaster (Hi Paul!) does read this list. Maybe he will
> > respond to you off list. Since they started doing sender verification,
> > there has been some sporatic issues, most being resolved.
>
> I dont think "sporadic" is the word (regardless of how you spell it! :-)
Yeah, I just took another peek at the the verizon newsgroups. People are
starting to bitch quite loudly now that they are not getting mail. It
seems to be getting worse.
> I suspect (though I have not investigated to be 100% sure) this stupid
> use of "active" sender address verification (a concept broken by design)
> is the reason why verizon.net continues to be listed in both the
> postmaster and abuse zones of the rfc-ignorant.org DNSBL.
Well, I do use basic sender verification in exim:
deny sender_domains = ! /etc/exim4/whitelist.senders
! verify = sender
and it has helped a little with spam, but I also make sure I accept
postmaster & abuse BEFORE such checks - something Verizon is NOT doing.
I see no reason to accept mail from senders that I can't bounce / reply
to.
Verizon's abuse handling does need work, and they have other problems
with refusing to be RFC compliant on their outgoing mail servers. The
fact is, Verizon's mail servers are so unreliable now that people would
be nuts to use them.
