<![CDATA[Email is not configured properly]]>the previous post have no answer. PTR6 DNS record (PTR) did not match. what is the solution?

]]>https://forum.cloudron.io/topic/13670/email-is-not-configured-properlyRSS for NodeTue, 12 May 2026 00:12:56 GMTSun, 20 Apr 2025 00:29:26 GMT60<![CDATA[Reply to Email is not configured properly on Mon, 26 May 2025 11:44:24 GMT]]>here too, having this problem since about 10 days... little bit annoying...

]]>https://forum.cloudron.io/post/107701https://forum.cloudron.io/post/107701Mon, 26 May 2025 11:44:24 GMT<![CDATA[Reply to Email is not configured properly on Mon, 28 Apr 2025 10:01:54 GMT]]>I had this issue for a long time with Cloudron, with both Hostinger and Hetzner as DNS/NS managers. I just check everytime those issues occur of course but I tend to just not trust anymore any Cloudron notifications for Emails config 😢

]]>https://forum.cloudron.io/post/106342https://forum.cloudron.io/post/106342Mon, 28 Apr 2025 10:01:54 GMT<![CDATA[Reply to Email is not configured properly on Fri, 25 Apr 2025 09:34:42 GMT]]>@dynimighti the only issue with the workaround is that you have to reapply it at each reboot of your server …

@nebulon would it be possible to add the firewall rule specified in this post (link below) in cloudron to solve this issue with vps providers using dhcpv6 ?

https://forum.cloudron.io/post/105840

]]>https://forum.cloudron.io/post/106251https://forum.cloudron.io/post/106251Fri, 25 Apr 2025 09:34:42 GMT<![CDATA[Reply to Email is not configured properly on Fri, 25 Apr 2025 00:37:56 GMT]]>@Gengar think that worked, thanks.

]]>https://forum.cloudron.io/post/106231https://forum.cloudron.io/post/106231Fri, 25 Apr 2025 00:37:56 GMT<![CDATA[Reply to Email is not configured properly on Wed, 23 Apr 2025 22:49:39 GMT]]>@Gengar said in Email is not configured properly:

I think it should be a brief interruption with their dns or something network related .

That's my current guess.

]]>https://forum.cloudron.io/post/106173https://forum.cloudron.io/post/106173Wed, 23 Apr 2025 22:49:39 GMT<![CDATA[Reply to Email is not configured properly on Wed, 23 Apr 2025 20:55:18 GMT]]>@andreasdueren I only tried with a virtual one at hetzner so idk for the dedicated . But for virtual it’s a fixed IPv6 and I also had my ptr to null one or two times on this one but it’s temporary and very quick. I think it should be a brief interruption with their dns or something network related .

]]>https://forum.cloudron.io/post/106169https://forum.cloudron.io/post/106169Wed, 23 Apr 2025 20:55:18 GMT<![CDATA[Reply to Email is not configured properly on Wed, 23 Apr 2025 20:52:33 GMT]]>@dynimighti okay so if you read the content of your netplan yaml config file you will be able to see if dhcpv6 is enabled . If yes , then you need to use the fix in the link I’ve sent before.

]]>https://forum.cloudron.io/post/106168https://forum.cloudron.io/post/106168Wed, 23 Apr 2025 20:52:33 GMT<![CDATA[Reply to Email is not configured properly on Wed, 23 Apr 2025 15:50:34 GMT]]>@Gengar Hetzner dedicated and virtual

]]>https://forum.cloudron.io/post/106166https://forum.cloudron.io/post/106166Wed, 23 Apr 2025 15:50:34 GMT<![CDATA[Reply to Email is not configured properly on Tue, 22 Apr 2025 23:00:39 GMT]]>@Gengar linode

]]>https://forum.cloudron.io/post/106134https://forum.cloudron.io/post/106134Tue, 22 Apr 2025 23:00:39 GMT<![CDATA[Reply to Email is not configured properly on Tue, 22 Apr 2025 21:39:21 GMT]]>@dynimighti who is your vps provider ?

Because there is a known issue in cloudron for VPS providers that are using DHCPv6, the lease will not be renewed because the traffic is not allowed on UDP port 546 (client) from port 547 (server) in Cloudron's default ip6tables ruleset. Based on RFC 8415 , this port needs to be explicitly opened for DHCPv6 to work correctly.

This issue will lead to PTR6 value = null ... simply because your ipv6 lease is not renewed and so you loose your ipv6...

You can find more information about the issue I'm talking about and a temporary fix here :
https://forum.cloudron.io/topic/13566/infomaniak-ipv6-issues/61?_=1745357068478

But if you are using Hetzner it shouldn't be the case because I did some tests and they are setting a fixed ipv6 address. It means you cannot loose your ipv6, so you shouldn't have the issue I'm talking about.

]]>https://forum.cloudron.io/post/106133https://forum.cloudron.io/post/106133Tue, 22 Apr 2025 21:39:21 GMT<![CDATA[Reply to Email is not configured properly on Tue, 22 Apr 2025 14:13:43 GMT]]>@nebulon given the intermittent and short term nature of the issue it could just be short term network stuff happening somewhere. Mostly it's fine.

]]>https://forum.cloudron.io/post/106111https://forum.cloudron.io/post/106111Tue, 22 Apr 2025 14:13:43 GMT<![CDATA[Reply to Email is not configured properly on Tue, 22 Apr 2025 14:07:38 GMT]]>Just created a Hetzner server and maybe the IPv6 PTR issue is, that the default setting is :: while Cloudron checks for ::1 (or whatever you see in the status page) After adding a second PTR for IPv6 it started to work so far at least.

]]>https://forum.cloudron.io/post/106109https://forum.cloudron.io/post/106109Tue, 22 Apr 2025 14:07:38 GMT<![CDATA[Reply to Email is not configured properly on Tue, 22 Apr 2025 12:04:12 GMT]]>Maybe you could contact Hetzner about this then, this is a bit out of scope for Cloudron, which only really does some sanitychecking here based on a PTR record check.

]]>https://forum.cloudron.io/post/106100https://forum.cloudron.io/post/106100Tue, 22 Apr 2025 12:04:12 GMT<![CDATA[Reply to Email is not configured properly on Tue, 22 Apr 2025 10:52:47 GMT]]>@Kubernetes said in Email is not configured properly:

I also get this error message from time to time on my Cloudron on Hetzner VPS. Usually during night and when I check in the morning the issue does not exist anymore. Maybe it is an issue with DNS Lookup?

Same (with a Hetzner dedicated server). I've had it maybe 3 or 4 times. Always around the same time in the early hours.

]]>https://forum.cloudron.io/post/106091https://forum.cloudron.io/post/106091Tue, 22 Apr 2025 10:52:47 GMT<![CDATA[Reply to Email is not configured properly on Tue, 22 Apr 2025 08:33:54 GMT]]>What kind of intermittent maintenance could affect this?

]]>https://forum.cloudron.io/post/106076https://forum.cloudron.io/post/106076Tue, 22 Apr 2025 08:33:54 GMT<![CDATA[Reply to Email is not configured properly on Tue, 22 Apr 2025 08:32:09 GMT]]>@nebulon This is the error show:

Email is not configured properly Yesterday
secondarytld.com

  • PTR6 DNS record (PTR) did not match.
  • Hostname: null
  • Expected: mail.tld.com
  • Actual: null

Email Status is checked every 30 minutes. See the troubleshooting docs for more information.**

]]>https://forum.cloudron.io/post/106075https://forum.cloudron.io/post/106075Tue, 22 Apr 2025 08:32:09 GMT<![CDATA[Reply to Email is not configured properly on Tue, 22 Apr 2025 08:08:49 GMT]]>I also get this error message from time to time on my Cloudron on Hetzner VPS. Usually during night and when I check in the morning the issue does not exist anymore. Maybe it is an issue with DNS Lookup?

]]>https://forum.cloudron.io/post/106072https://forum.cloudron.io/post/106072Tue, 22 Apr 2025 08:08:49 GMT<![CDATA[Reply to Email is not configured properly on Tue, 22 Apr 2025 07:28:53 GMT]]>So the issue is that the PTR does not match the ipv6 or that it is intermittedly resolving to the wrong value or is there any other issue? If so more info would help to get down to it.

]]>https://forum.cloudron.io/post/106068https://forum.cloudron.io/post/106068Tue, 22 Apr 2025 07:28:53 GMT<![CDATA[Reply to Email is not configured properly on Mon, 21 Apr 2025 20:51:20 GMT]]>@andreasdueren I've intermittently got them a few times too.

]]>https://forum.cloudron.io/post/106048https://forum.cloudron.io/post/106048Mon, 21 Apr 2025 20:51:20 GMT<![CDATA[Reply to Email is not configured properly on Mon, 21 Apr 2025 20:08:08 GMT]]>@BrutalBirdie to be fair though I have the PTR records set up for a long time now but for some reason I keep getting these errors lately too

]]>https://forum.cloudron.io/post/106047https://forum.cloudron.io/post/106047Mon, 21 Apr 2025 20:08:08 GMT<![CDATA[Reply to Email is not configured properly on Sun, 20 Apr 2025 10:04:17 GMT]]>There are now many post about mail and IPv6 included PTR.
The forum search is a powerful tool 🙂

You need to set the PTR Record for your IPv6 in your hoster.

]]>https://forum.cloudron.io/post/105998https://forum.cloudron.io/post/105998Sun, 20 Apr 2025 10:04:17 GMT