Well, they might be referring to the MAPS/ORBS open relay database.
The BlackHole list is really just a DNS server that you configure your sendmail relay
to reject mail from dns entries that are found to be in that list.
You should test your relay first before trying to get off the list or they will just
spank you.
To test, you just telnet FROM the relay box and initiate the test which it sends the
results
back in that same telnet session. If you fail, you will remain on the ORBS/RSS lists...
Go to sendmail.org, read....you will find info there.
----- Original Message -----
From: "rac" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, June 13, 2001 12:03 PM
Subject: SPAM Mail , 3rd party relays & Black Hole listing
> Hi fellow geeks:
>
> I rarely post here and only do so if I have an issue that I've not seen
> very much on. The issue is one of my customers having a mail spammer that
> won't stop. This person is using the firewall as a mail relay spamming
> others while showing the source address of the spam as the firewall's IP
> address.
> One of the solutions I have suggested to them is to put in deny rules
> blocking all of the known IP addresses that he/she is coming from. They
> eventually have entered rules blocking a whole class A sub-net because the
> spammer keeps changing his IP address. They also have been on the "Black
> Hole" spammers list since April and can't do enough to get off of it. BTW,
> has anyone ever heard of the "Black Hole" spammers list? I have heard of
> others but not this one.
>
> I have checked into the vulnerabilities list and their NT mail server is up
> to date on patches.
>
> Anyone have any ideas/suggestions as to what other steps could be done?
>
> regards,
> RAC
>
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