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Make README clearer about PTR record

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lesha 2020-10-18 03:22:57 +00:00 committed by GitHub
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@ -51,9 +51,10 @@ actually works perfectly.
**CNAME record** for your `mail.` subdomain.
4. **A Reverse DNS entry for your site.** Go to your VPS settings and add an
entry for your IPV4 Reverse DNS that goes from your IP address to
`mail.<yourdomain.com>`. If you would like IPV6, you can do the same for
that. This has been tested on Vultr, and all decent VPS hosts will have
a section on their instance settings page to add a reverse DNS PTR entry.
`<yourdomain.com>` (not mail subdomain). If you would like IPV6, you can do
the same for that. This has been tested on Vultr, and all decent VPS hosts
will have a section on their instance settings page to add a reverse DNS PTR
entry.
You can use the 'Test Email Server' or ':smtp' tool on
[mxtoolbox](https://mxtoolbox.com/SuperTool.aspx) to test if you set up
a reverse DNS correctly. This step is not required for everyone, but some