[Solved] Mail from Tommy to Hostinger is bounced/rejected

[sterremu]

If I send mail to one of my mailaddresses at hostinger.com this is rejected. As far as I can see mail to gmail, yahoo,mail.com and protonmail works fine.

 

Complete response below.

 

Quote

 

This is the mail system at host tommy2.heliohost.org.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                   The mail system

<info@ebenau.net>: host mx1.hostinger.com[34.149.19.242] said: 554 5.7.1 Sender
    IP Blocked by CSI. For remediation please use
    https://csi.cloudmark.com/en/reset/?ip=65.19.141.77 (in reply to RCPT TO
    command)

Reporting-MTA: dns; tommy2.heliohost.org
X-Postfix-Queue-ID: 4D617411CD79
X-Postfix-Sender: rfc822; eric@myhelio.ml
Arrival-Date: Fri, 18 Nov 2022 12:37:02 +0000 (UTC)

Final-Recipient: rfc822; info@ebenau.net
Original-Recipient: rfc822;info@ebenau.net
Action: failed
Status: 5.7.1
Remote-MTA: dns; mx1.hostinger.com
Diagnostic-Code: smtp; 554 5.7.1 Sender IP Blocked by CSI. For remediation
    please use https://csi.cloudmark.com/en/reset/?ip=65.19.141.77

Afzender	Eric Ebenau
Ontvanger	info@ebenau.net
Datum	Vandaag 13:37

fcgi ik heb het ook wel eens langzaam met een draaitafel gedaan die naast de recorder is

---
Regards, Eric

 

 

[wolstech]

It's probably because it can't verify the sender due to your SPF record being missing. Since myhelio.ml is using our name servers, Krydos needs to fix that...

[sterremu]

So if I use my own bind nameserver I can fix this myself?

[wolstech]

If you used external DNS, yes. Many users here use cloudflare so they can manage DNS themselves. Eventually once domain DNS integration is done you'll be able to edit DNS on our name servers, but it's not ready yet.

If you want to use external DNS, you need an A record pointed to 65.19.141.77, an MX pointed to tommy2.heliohost.org, and a TXT record with this value for SPF: "v=spf1 a mx ip4:65.19.141.77 ~all"

Edited November 18, 2022 by wolstech
Fix SPF record

[sterremu]

Thanks.

[Krydos]

Since you've switched to an external DNS provider I am going to mark this as solved. Let us know if you need help with anything else.

[sterremu]

OK, but I still get:

The mail system

<eric@ebenau.net>: host mx1.hostinger.com[34.149.19.242] said: 554 5.7.1 Sender
    IP Blocked by CSI. For remediation please use
    https://csi.cloudmark.com/en/reset/?ip=65.19.141.77 (in reply to RCPT TO
    command)

 

 

So at CSI the IP address must be on a blacklist, probably because some user has produced onwanted content while mailing via Hostinger.

Perhaps you can check it yourself with the provided link of Cloudmark.

[Krydos]

I have requested a delisting of the IP.

[sterremu]

Yes!

Its working now:

Received: from tommy2.heliohost.org (tommy2.heliohost.org [65.19.141.77])
    by gcp-europe-west4-c-smtpin4.hostinger.io (mx.hostinger.com) with ESMTPS id 4NFQqR5WZZz2l0s8
    for <eric@xxxxx.net>; Sun, 20 Nov 2022 09:54:59 +0000 (UTC)
Received: from webmail.sterremu.helioho.st (localhost.localdomain [IPv6:::1])
    by tommy2.heliohost.org (Postfix) with ESMTPSA id AFB95402FF47
    for <eric@xxxxx.net>; Sun, 20 Nov 2022 09:54:50 +0000 (UTC)
Authentication-Results: tommy2.heliohost.org;
    spf=pass (sender IP is ::1) smtp.mailfrom=eric@xxxx.ml smtp.helo=webmail.sterremu.helioho.st
Received-SPF: pass (tommy2.heliohost.org: connection is authenticated)

 

Thanks again. 😎

Edited November 20, 2022 by sterremu
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