How to Accept Emails on the Server and Forward them to Another Email Address

Hello,

We need to have corporate emails like info@example.com and forward all incoming emails to another address.

To do it I have configured Postfix according to this article: https://simonward.net/configure-postfix-email-forwarding/

Also, in DigitalOcean account added DNS records like this: A record: mail.example.com => [site IP] MX record: example.com => mail.example.com (priority 10) And checked that MX records are correct using different services.

After this when I send emails to info@example.com from the server (using PHP mail() function) redirect to another address works great, but when I send external emails to info@example.com from other addresses the server does not accept these emails and the redirect does not work.

Is it possible that DigitalOcean blocking something?

Could you please recommend a way of how to accept emails on the server and forward them to another email address?

Thank you!