My OVH dedicated server is blacklist by SpamHaus
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Yes, this is quite common. You have to setup a mail relay if you care about mail deliverability - https://docs.cloudron.io/email/#relay-outbound-mails
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Hello, are you sure that your the Cloudron blocklist check works well and that the IP address DB is up to date ?
I'm experiencing the same issue than @laurent with an OVH dedicated server. Cloudron tells me that my server's IP address is on the Spamhaus ZEN block list.- I tested my IP address directly on check.spamhaus.org: IP address "has no issues" !
- Then I tested it with mxtools: Green checkmark for Spamhaus ZEN !
- Then, again using mail-tester.com: Not listed on any Spamhaus blocklist
(although, mail-tester does not seem to use the ZEN list but shows 4 other Spamhaus list names)
So why does Cloudron tells me that it's on the ZEN blocklist ? Very strange.
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I think this is because recently SpamHaus added a policy to not allow requests from many IPv6 blocks. Can you please check this:
- SSH into server and edit
/etc/unbound/unbound.conf.d/cloudron-network.conf
. Change the linedo-ip6: yes
todo-ip6: no
. systemctl restart unbound
Does this help the SpamHaus check?
- SSH into server and edit
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@gerard thanks for testing. A fix for this is coming next release.
The issue is fairly recent. SpamHaus made some policy change when requests come from IPv6 addresses.