They (digitalocean) block the smtp ports on new accounts and you need to contact them to get it unblocked. Other posts suggest it’s just a case of contacting them to get it unblocked. But when I reached out to them they refused to unblock the ports. They said I should ask them again when my account is over 60 days old. That kind of sucks cos I have a contact form on my website that now doesn’t work.

I’m not sure why they haven’t got back to you. I know there was recently an issue with emails not being delivered if you reply from your inbox. Have you tried responding to the ticket through the dashboard?

Hi Shaliru.. Thanks for the reply. I got the resolution.

My account neither cant do gmail smtp mails. Already past away all 60 days of the “security policy” and nothing. My app DO NOT REQUIRE an private mail API to send 100 mails/month. HOW DO I PROCEED ?

I recently got the same problem. I can not talk with server gmail-smtp-in.l.google.com too.
When I try to do it, I got:

telnet gmail-smtp-in.l.google.com 25
Trying 108.177.119.27…
Trying 2a00:1450:4013:c00::1a…
telnet: Unable to connect to remote host: Network is unreachable

Someone can help me?

DigitalOcean are blocking IPv6 SMTP access because they say IPv6 whitelists and blacklists that prevent spam aren’t working properly (see article ‘Does DigitalOCean block SMTP access?“). Instead use IPv4 and you’re fine.