You cannot send emails from Plesk because outbound connections on TCP port 25 is [URL='https://support.plesk.com/hc/en-us/articles/213394989-Unable-to-send-emails-using-Plesk-local-mail-server-Connection-timed-out-or-connection-refused']blocked[/URL]. Check the [URL='https://support.plesk.com/hc/en-us/articles/213934285-Unable-to-receive-or-send-e-mails-port-25-is-blocked']firewall[/URL]settings or contact your hosting provider. If you are sure that the ports are already open, Plesk can recheck them.
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