[exim] Exim ML: 550 Sender verify failed

Hi,

the sender verification does not use TLS encrypted connections to verify
senders:

550-Verification failed for <cyborg2@???>
550-Called:   83.246.80.130
550-Sent:     RCPT TO:<cyborg2@???>
550-Response: 550 Receiver does not accept unencrypted connections
550 Sender verify failed

Solution: switch to TLS encrypted connections.

Marius