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Configure SMTP on ubuntu 20.04

Posted on September 23, 2020

Hi i have one droplet with multiple domains i want to configure its smtp to receive emails i was searched alot but i don’t find any solution for ubuntu 20.04 please help me

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marks567217

September 23, 2020

Try this one https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-postfix-as-a-send-only-smtp-server-on-ubuntu-20-04

Bobby

May 4, 2026

Hey,

Quick update in case anyone comes across this in 2026. The SMTP ports (25, 465, and 587) are blocked on all Droplets for new accounts to prevent spam and other abuses:

https://docs.digitalocean.com/support/why-is-smtp-blocked/

Even if SMTP were available, DigitalOcean strongly recommends against running your own mail server in favor of using a dedicated email deliverability platform:

https://www.digitalocean.com/community/tutorials/why-you-may-not-want-to-run-your-own-mail-server

Dedicated email deliverability platforms are better at handling deliverability factors like IP reputation.

To send mail from DigitalOcean, they recommend using https://smtpfa.st/ or SendGrid or another SMTP service.

Alternatively, you could reach out to the DigitalOcean support team and check if they could lift the block for you but in many cases this is not possible:

https://www.digitalocean.com/support/

Another option is to use a non-standard SMTP port like 2525 for example if your SMTP provider allows it.

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