Re: blacklisting

[David Gibbs <david@xxxxxxxxxxxx>]

*** Replying to a message in MIDRANGE-NONTECH

Jeff Crosby wrote:
> A guy here at work says he is unable to send email to his wife at work.  She
> said her network people say it's because our site is listed somewhere as
> sending spam.
>
> We don't send spam.  A few years ago we got blacklisted because we were an
> open relay.  David helped me fix that.  How do we find out if we're listed
> anywhere?  And how come that's the only place (that I know of) where we're
> having a problem?

Depends on how your wifes network is connected to the internet.

If they are using a ADSL line (consumer grade), then the IP currently
assigned to the mail server might have been blacklisted before.

Some receiving mail servers are overly aggressive WRT blacklists and
block mail from any IP that's assigned to ISP's ADSL pools.

You can check to see if the IP of the mail server is in any of the RBL's
using one of the multi-rbl lookup services.  I've used
http://www.completewhois.com/rbl_lookup.htm a number of times.

Personally, I would suggest getting the mail server's IP reassigned to a
static IP and from a non-ADSL (consumer) address pool.  The ISP should
be able to help with that.

david