mailbox feature on outbound only / send only mailboxes

[simong]

Hello,

It would be very helpful if Cloudron allowed the creation of mailboxes even when a domain is set to "outbound only".

I attempted a workaround to enable mailbox creation without configuring DNS records. However, Cloudron automatically modified the DNS settings a few hours later without my consent, which disrupted the intended setup.

The reason for this setup is that I would like to use Cloudron's SMTP service, especially since Microsoft is phasing out classic SMTP authentication. At the same time, I still want to receive emails through Office 365.

Therefore, I would kindly suggest the following improvement:

Please avoid making automatic DNS changes without explicit permission.
OR
Ideally, allow mailbox creation even when the domain is set to outbound-only mode.

This would significantly improve flexibility for hybrid email configurations.

For now I removed the Cloudflare token from the domain config but that is not a great fix.

Thank you!

[joseph]

This will help me also to relay email from one Cloudron via another Cloudron .

[robi]

@joseph We can already do that.. I do anyway.

Perhaps it's something more specific?

[girish]

@simong said in mailbox feature on outbound only / send only mailboxes:

Please avoid making automatic DNS changes without explicit permission.

There is no code to make DNS changes in the background (other than the Dynamic DNS option flag) . Can you tell me how to reproduce this? I left some DNS changes overnight and they are untouched on my system atleast.

[charlesnw]

I believe you can achieve this with a normal cloudron user (even on another domain) and using masquerading?

As for the "automatic DNS" , that's a checkbox option when you are setting up mail for the first time on a domain. It is checked by default. That could perhaps be un-checked by default.

[simong]

@girish I couldn't replicate the problem. I disabled the DNS integration for this domain to get no further surprises.

I just got one more problem: Emails to the same domain are routed internally. Is there a way to prevent this?

[girish]

What is the use case to prevent internal routing?

But if you set up an external MX record and add that MX host to your SPF also (so Cloudron will accept incoming), then I think it does what you want?