No matter WHAT rbl you choose (no pitching ;) make sure you are aware of
WHAT dns servers you are using.
If you check mxtoolbox or hetrixtools, and see an IP listed, but you
don't see it listed in your queries, or blocked/flagged by the chosen
RBL, it is most likely a DNS problem.
Many open resolvers are blocked by many RBL's..
(IT's DNS, it's always DNS)
On 2021-11-12 10:56 a.m., Slavko via mailop wrote:
Hi,
I am using bl.0spam.org and nbl.0spam.org RBLs in my custom RBL check
script, but in more days their DNS server returns SERVFAIL.
Please, are these RBL gone or it is only mistake in its configuration?
regards
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