outbound port 25 timeout on digital ocean

[Koshish Rijal]

I ran with the following command

docker run --net=host -e TZ=Europe/London -v /home/data:/data --name "mailserver" -h "mail.contrate-me.com" -t analogic/poste.io

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[Marco Visin]

I had the same issue with Oracle cloud. In my case, it’s Oracle actively blocking outgoing SMTP connections to prevent spam.

If you have a paid account, you can ask for removing such a limitation.

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As an alternative, you can setup a Sendgrid relay which is also available for free. That’s what I’m currently doing and it works perfectly.

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Cheers!

[SH]

Yes, there are a number of service providers that do this. The solution is to ask to be unblocked (most will do this for a fee). Or second solution is to use a service that specialises in outgoing email.

(we use OVH for dedicated hosting, there is no problem)