Issue Unable to send emails with SMTP (Wordpress)

[Mafius]

Dear all,

I've setup Post SMTP in order to use the SMTP protocol to send emails. Looks like the ports for my domain are open. However, the system is times out when It tries to connect and send the email.

I've enabled to usage of SMTP protocol by Scripts in Plesk, and I am also able to send emails using regular SMTP protocol. Any ideas?

Iván