I think port 25 blocked for my external access. Does digitalocean unblock this port?
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We do block SMTP ports for some new accounts. This decision is made automatically on account creation. You can test this by using the telnet client to attempt to connect to a service on port 25.
telnet smtp.gmail.com 25
If this fails, being unable to connect you should open a ticket with our team. They can check if the port is blocked and assist you in having the block removed.
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