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Question

Cannot connect to email host

Posted February 8, 2018 903 views
EmailFirewallUbuntu 16.04

I am UNABLE to connect to the following services from my droplet:

  1. mail.keith-tan.com:110
  2. mail.keith-tan.com:143
  3. gator4055.hostgator.com:995

However, I am able to connect all three services from an AWS EC2 instance.

Why is Digital Ocean blocking my access? I have no firewall rules in place to block these paths.

Keith

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1 answer
alexdo December 31, 2019

Hello, @Geminized

Could you please perform a telnet test from your droplet to all these servers and provide us with the output?

The command syntax is the following:

telnet mail.keith-tan.com 110

telnet mail.keith-tan.com 143

telnet gator4055.hostgator.com 995

You can also make sure that ports 110,143 and 995 are open for outgoing TCP and UDP connections on your droplet.

Let me know if you have any questions.

Regards,
Alex

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