Manual reverse DNS [PTR] management

Host your MX on a storage VPS. Use MXRoute for SMTP. Add the necessary DNS records.

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people scanning for vulnerabilities (eg. open DNS resolvers that can be used for amplification attacks). People do a LOT of security scans across the web.

You can also add for dns:

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Because it is not a DNS Problem. Querying DNS via IPv6 just revealed the root cause of the problems. IPv6 connectivity. I was using "ping" because it has one advantage for me checkin

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You have no IP, gateway, DNS configured. This should not happen.

You make it sound like it's Mxroute fault because it worked at FastMail they do DKIM differently it's a cname the actual DKIM record is on their DNS server.

auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 123.123.123.123 gateway 123.123.123.1 netmask 255.255.255.0 dns-nameservers 8.8.8.8 8.8.4.4

The not resolving is clearly the DNS settings.

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I’ll look at setting up DNS elsewhere. But this has turned into more work than it should’ve been. Thanks for at least providing a reasonable answer, unlike Jar.

like this one https://www.mailhardener.com/tools/dns-record-splitter.

What exactly is it that you are you accusing me of doing? The front page of the website says I expect you to know how to configure DNS, and I didn't do anything to your "Hover" nor d

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I honestly don't know. Just what I've seen every time someone mentions HE for DNS. They work fine for me.

Also SYS only comes with 250 Mbps limit. So SYS in general is no option if you require more than 500 Mbps. However if you say you only want to use it for DNS and it's idle most of the time, I wonder w