Digital Ocean Firewall blocking sending Email

Hi all, I’m running a WordPress site on Ubuntu 16.04 Server. Before using Digital Ocean Firewall feature. My WordPress site was sending outgoing emails without any problem but after enabling I’m getting following error in my mail server log:

server postfix/smtp[10014]: connect to[2607:f8b0:400d:c03::1b]:25: Network is unreachable

Currently I’m using following rules in the firewall:


Outbound Rules: DNS TCP TCP 53 HTTP TCP 80 HTTPS TCP 443 DNS UDP UDP 53

Please help me which port rule I’ll need to add in the firewall to fix the issue, Thanks!

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Accepted Answer

Me too. I send support ticket about it and here DO answer:


Thank you for contacting DigitalOcean.

Stopping spam is a constant fight, so we have implemented some restrictions on newer accounts. To qualify for the ability to send out email, we do require accounts to wait 60 days before we can look into removing the restriction. Once your account has reached 60 days of stable use, please do reach back out to us so we can look into this for you.

We appreciate your understanding on this matter.*

well this is not make sense to me.

I’m working to build ecommerce site. I signup for vps service and buy cpanel license in order to have manage my site without have shared host limitation. Why DO limit their vps user for sending email from the server while all shared host allow their clients from the first time they signup?

It seems that DO has blocked SMTP ports although you’d applied all-port outgoing rules. I’ve tested with Amazon AWS to send emails through Zoho Mail and it’s okay. Problems are with DO for sure.

Was going to recommend digitalocean for my company infra. But because of this stupid issue. Moved to AWS and in time i will move my personal VPS to AWS/GCP

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