Question

SMTP 587 ports is closed

Posted on March 18, 2025
DigitalOcean Droplets Email
Asked by FriendlyElectricBlueDolphin

in-v3.mailjet.com 587

Trying 104.199.96.85...

Please unban

sudo ufw status verbose

Status: active

Logging: on (low)

Default: deny (incoming), allow (outgoing), disabled (routed)

New profiles: skip



To                         Action      From

--                         ------      ----

80,443/tcp (Apache Full)   ALLOW IN    Anywhere

22/tcp (OpenSSH)           ALLOW IN    Anywhere

22/tcp                     ALLOW IN    Anywhere

587/tcp                    ALLOW IN    Anywhere

465/tcp                    ALLOW IN    Anywhere

80,443/tcp (Apache Full (v6)) ALLOW IN    Anywhere (v6)

22/tcp (OpenSSH (v6))      ALLOW IN    Anywhere (v6)

22/tcp (v6)                ALLOW IN    Anywhere (v6)

587/tcp (v6)               ALLOW IN    Anywhere (v6)

465/tcp (v6)               ALLOW IN    Anywhere (v6)



587/tcp                    ALLOW OUT   Anywhere

465/tcp                    ALLOW OUT   Anywhere

587/tcp (v6)               ALLOW OUT   Anywhere (v6)

465/tcp (v6)               ALLOW OUT   Anywhere (v6)

And yes I have them on digitalocean firewall:

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Bobby Iliev

Site Moderator

• March 18, 2025

Hey @ahmednaeem,

The SMTP ports (25, 465, and 587) are blocked on all Droplets for new accounts to prevent spam and other abuses.

Even if SMTP were available, DigitalOcean strongly recommends against running your own mail server in favor of using a dedicated email deliverability platform. Dedicated email deliverability platforms are better at handling deliverability factors like IP reputation.

To send mail from DigitalOcean, they recommend using SendGrid via the SendGrid Marketplace 1-Click App.

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/

- Bobby.

alexdo

Site Moderator

• March 18, 2025

Hello, @friendlyelectricbluedolphin

All mail ports are closed on new accounts and droplets. You can use third-party as mail provider. DigitalOcean recommends using SendGrid Marketplace 1-Click App.

Regards

Vytenis Ščiukas • April 1, 2025

The biggest retarded solution anyone could think off is to block SMTP ports, whole app is unusable with official MS SMTP. Who the hell thought this was a good solution?