Tugger the SLUGger!SLUG Mailing List Archives


On Wed, 25 Feb 2004, Jeff Allison wrote:

> Anyone been getting these
> And maybe know a work around
> From: "Mail Delivery System" <MAILER-DAEMON@xxxxxxxxxxxxxxx>
> To: <terrigal28@xxxxxxxxxxxxxxx>
> Sent: Wednesday, February 25, 2004 10:45 PM
> Subject: Undelivered Mail Returned to Sender
> > This is the Postfix program at host dalston.blackshaw.dyn.dhs.org.
> >
> > I'm sorry to have to inform you that the message returned
> > below could not be delivered to one or more destinations.
> >
> > For further assistance, please send mail to <postmaster>
> >
> > If you do so, please include this problem report. You can
> > delete your own text from the message returned below.
> >
> > The Postfix program
> >
> > <Beanienut3@xxxxxxx>: host mailin-03.mx.aol.com[] said:
> 554-:
> >     (DNS:B1) AOL has determined that you are connecting directly to our
> mail
> >     servers from a residential or dynamic IP. AOL
> onG'8xccepID=22b403c8ad91bb

It's commonplace these days for mail administrators to use RBL checks on
inbound commections.

One of the RBL lists has a heading for "dial-up blocks", or IP's which are
dynamically assigned to dial up clients, or dynamic allocation IP
addresses - which means that if the email *is* spam, it can't necessarily
be tracked effectively. My mail server does exactly what AOL's does -
denies the connection.

A work around is to relay your outbound mail through your ISP's
"legitimate" mail server - that way, AOL will see it coming from a
non-dynamic IP, and accept the message.

This, of course, depends on your ISP allowing you to relay through it.