DigitalOcean port 25 unblocking

[Lanhild]

Hello,

I contacted DigitalOcean support about unblocking the outbound port 25 on my droplet hosting Cloudron, as described in the docs

They replied to me with the following:

As I know Cloudron handles firewall configuration by itself and that it shouldn't be modified, I was wondering about how would I go to unblock the port 25?

Should I do it myself directly in their admin interface?

What would be "the Cloudron way" or recommend and safe method by the team?

Regards.

[robi]

Is mail turned on and configured?

Check iptables -L | grep 25?

[Lanhild]

@robi

That's the entire output of the command.

As for more context, I only use outbound emails, don't need inbound:

[robi]

Then it's not a Cloudron issue. You can telnet or nc from the box to any mail server on port 25 and check manually.

[Lanhild]

@robi I tried to set a firewall rule to allow outbound traffic from tcp port 25 on my DigitalOcean droplet, but then I can't access my.example.com, as if the server was down. My guess is that I'm doing the wrong thing.
Any clues?

[matix131997]

@Lanhild You set it wrong, you need to set ports 80, 443, 25 and 22 in the list "Inbound Rules".

[Lanhild]

@matix131997 Just tried this, the port 25 still shows up as filtered.

This isn't a Cloudron issue anymore, so I'll stop posting in this topic.

[matix131997]

@Lanhild This looks like a damaged Droplet.

[murgero]

You need to open a new ticket with DigitalOcean and request both inbound and outbound port 25. Outbound is what's blocked according to the screenshots you've sent.

[Lanhild]

@murgero This is what they replied

The error still shows up in Cloudron.

[Lanhild]

@Lanhild I sent a reply to them again. They've finally opened the port.