DO Support can't solve my problems. It's been over 14 days.

Posted September 25, 2017 1.7k views

I gave all details, answered all questions and despite that the problem is not solved and they closed the ticket saying that I should check my firewall… which I left open during the tests.

I don’t know what else to do… Ticket #588076.

Maybe search for another sawslution?

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3 answers

Maybe you could actually tell us the problem?
This isn’t a place for complaining about support as this is the community forums.

Sorry for that.

Simply put, from my droplet I can’t connect to port 26 of my mail server (not on DO). Yes, the SMTP server runs on a non-default port.

If I telnet that server on port 26 from the droplet I get no answer. I flushed all the rules and set the default policy of iptables to accept.

The same tests run on another provider works perfectly. So I don’t think it’s the SMTP server fault.

Here are the tests…

From the droplet:

iptables -L -n

Chain INPUT (policy ACCEPT)
target prot opt source destination

Chain FORWARD (policy ACCEPT)
target prot opt source destination

Chain OUTPUT (policy ACCEPT)
target prot opt source destination

telnet 26

telnet: Unable to connect to remote host: Connection timed out

From another provider:

telnet 26
Connected to
Escape character is ’^]’. ESMTP Exim 4.89 #1 Mon, 25 Sep 2017 14:26:09 -0400
220-We do not authorize the use of this system to transport unsolicited,
220 and/or bulk e-mail.
221 closing connection
Connection closed by foreign host.

Try on your DO server

sudo ufw allow 26
sudo service ufw restart