I'm hosting at OVH, running a small VM with SSD. The IP is fixed.

A range of IP owned by the cloud provider might explain things, except that I'm not responsible (nor have any control) of bad neighbours.

On 2019-02-21 2:03 p.m., Val Kulkov via talk wrote:
On Thu, 21 Feb 2019 at 13:34, Marc Lijour via talk <talk@gtalug.org> wrote:
Does anyone has insights about dealing with Spamhaus?

I'm getting increasingly frustrated by being listed without explanation.
I run a very low bandwidth mail server and a website for my business. I
am running postfix with SPF, DKIM, and DMARC. I'd like to know what I am
missing.

Do you have a permanent staticĀ IP address? If not, you may occasionally be picking up a "dirty" IP address.

Also, it seems to me that even permanent static IP addresses are not made the same. I get a feeling that some spam databases do not "like" certain ranges of IP addresses. Although I have no direct evidence of it, I suspect that these spam database sites run periodic checks on how much spam a subnet produces and when it exceeds some threshold the entire subnet is marked "dirty".


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