Are you using zen.spamhaus.org or dbl.spamhaus.org? Pay attention!

[Barry de Graaff]

Hello All,

Spamhaus is making some changes in their policy enforcement, from their 
website:

/Are you currently using the Spamhaus Project’s DNS Blocklists (DNSBLs)? 
Do you access them via the Public Mirrors, for example, query 
“sbl.spamhaus.org” or “zen.spamhaus.org”? Do you use Cloudflare’s DNS? 
If you’ve answered “yes” to all three of those questions, you need to 
make some changes to your email infrastructure. These changes are quick 
and easy to make, but if you fail to make them, you could find that at 
some point in 2022, all or none of your email is blocked!//
/
So if you use Cloudflare DNS and have configured Zimbra to use the 
public Spamhaus mirrors, you need to make some changes. Please note that 
even if you do not use Cloudflare there are other cases where you also 
cannot use “sbl.spamhaus.org” or “zen.spamhaus.org” anymore.

Further information:

https://blog.zimbra.com/2022/08/are-you-using-zen-spamhaus-org-or-dbl-spamhaus-org-for-fighting-spam-pay-attention/


Regards, Barry
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