Dear customers, we apologize for the compromised availability of email services due to the ongoing massive DDos attack on one of our mail servers. Our engineers are fighting this problem, the cause is already known to us and we strive to remove it as quickly as possible. We have only diverted the operation of outgoing mail servers to servers that have not been attacked, and we have temporarily stabilized the situation. After the attack has gone, we will expand the traffic back to all outgoing mail servers. Thank you for your understanding.