Skip to main content
mailyoto
12 of 13

A checker warns about reverse DNS on our MX servers

Servers that deliver to you never check the reverse DNS of mx1 and mx2.mailyoto.com. A checker's warning about it changes nothing for your email.

Updated 27 October 2026

You test your domain with an online DNS or mail-server checker. It warns that the reverse DNS of mx1.mailyoto.com or mx2.mailyoto.com is missing, or doesn’t match the server’s SMTP banner.

Why it happens#

A checker connects to each MX host of your domain on port 25. It reads the greeting the server sends first, called the banner, and compares the name in it with the reverse DNS (PTR) name of the server’s address.

We checked our own MX servers on 21 October 2026:

  • mx1.mailyoto.com and mx2.mailyoto.com led to the same server.
  • That server greeted both names with 220 mx1.mailyoto.com mailyoto.com ESMTP service ready.
  • Its address had no reverse DNS name.

So a checker reports a missing PTR for both hosts, or a banner that doesn’t match the name mx2.mailyoto.com.

Why it doesn’t affect your email#

mx1.mailyoto.com and mx2.mailyoto.com only receive email for your domain. A server that delivers email to you looks up your MX records and connects. It doesn’t check the reverse DNS of the server it delivers to.

Reverse DNS matters for servers that send email, because receiving servers check it. Mailyoto forwards and sends your email from separate sending servers. On 21 October 2026, each of them had a reverse DNS name under mailyoto.com that led back to its own address.

What to do#

  1. Leave your MX records as they are#

    Keep mx1.mailyoto.com (priority 10) and mx2.mailyoto.com (priority 20). Don’t change them because of this warning.

  2. Check your domain on the DNS tab#

    Open Domains, choose your domain, then the DNS tab, and choose Check DNS. That check is the one that decides whether forwarding works.

Confirm it worked#

Every row on the DNS tab and the Forwarding pill show a tick. Send an email to one of your aliases from another account to see it arrive.

The checker warns about a server that isn't Mailyoto's

A warning about another company’s server, such as the one that sends your newsletters, belongs to that company. Ask its support to set a reverse DNS name for the server.