The following message I get when trying to send emails via SMTP -
An error occurred while sending mail. The mail server responded: Connection temporarily refused, if it persists contact your ISP
If your IP is a dynamic one (ADSL or dial-up, for instance) please reconfigure your outgoing settings to use your ISP server
Ligacao temporariamente recusada, se o problema persistir contacte o seu fornecedor de servico
Se acede a partir de um IP dinamico (ADSL ou dial-up, p.e.) por favor configure o envio para utilizar o seu ISP (#4.7.0). Please check the message recipient
email@example.com and try again.
Receiving email is working OK. Everything was working correctly yesterday. I've changed nothing.