Make sure that you use the right outgoing mail server (SMTP server): If your domain name is “abc.com” then the SMTP should be “mail.abc.com”.
The port number should normally be 25, but if you’re using this and it doesn’t work, then your Internet Service Provider is blocking that port. Use port 587 instead.
If that doesn’t do the trick, write here again and we’ll try to help you more.
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