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On 2021-07-05 9:35 a.m., Greg Wooledge wrote:
> On Mon, Jul 05, 2021 at 09:23:03AM -0400, Polyna-Maude Racicot-Summerside wrote:
>> Reporting-MTA: dns; premium58.web-hosting.com
>> Action: failed
>> Final-Recipient: rfc822;bjoern.ricks@greenbone.net
>> Status: 5.0.0
>> Remote-MTA: dns; mail.greenbone.net
>> Diagnostic-Code: smtp; 550 X-Host-Lookup-Failed: Reverse DNS lookup
>> failed for (failed)
> unicorn:~$ host
> domain name pointer cyrania.com.
> unicorn:~$ host cyrania.com.
> cyrania.com has address
> cyrania.com has address
> cyrania.com has IPv6 address 2606:4700:3031::6815:3beb
> cyrania.com has IPv6 address 2606:4700:3031::ac43:b96d
> cyrania.com mail is handled by 0 _dc-mx.f1202d9a4fb3.cyrania.com.
> Your "reverse" (PTR record for doesn't match.  Which is
> to say, none of the "A" results from cyrania.com. match the original
> IP address of
So is there something I can do on my side ?
I don't have control over the IMAP/SMTP server (premium58.web-hosting.com).

Would it be better to simply not use Cloudflare (free tier) for the
domain where I am using mail service ?

Because my web server is mostly on polynamaude.ca / polynamaude.org .
It's mostly a parking page for polynamaude.com that I could simply remove.

> Some SMTP receivers may care about that.  Apparently the receiver for
> greenbone.net (whose name is mail.greenbone.net) is one of them.

Polyna-Maude R.-Summerside
-Be smart, Be wise, Support opensource development

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