PHP Swift mailer: Failed to authenticate on SMTP using 2 possible authenticators

Question

When I send an email with the PHP Swift mailer to this server: smtp.exchange.example.com like this:

// Load transport
$this->transport =
    Swift_SmtpTra         


        

Answer 1

Strange enough sending emails works again. We did not change anything and the host say they did not either. We think a server restarts or so. It is strange :S