any thougts? oho down?

the zoho smtp server reply:

This report relates to a message you sent with the following header fields:

 Message-id: <xxxxxxx >
 Date: Wed, 17 Jun 2015 12:02:55 +0200
 From: =?utf-8?Q?xxxx= <xxxx >
 To: xxxxxx
 Subject: test

Your message cannot be delivered to the following recipients:

 Recipient address:xxxxxxx
 Reason: SMTP transmission failure has occurred
 Diagnostic code: smtp;559 Message not committed due to internal error
 Remote system: dns; mx2.zoho.com  (TCP|17.172.204.151|42220|165.254.168.50|25) ( mx.zohomail.com  SMTP Server ready June 17, 2015 3:03:02 AM PDT)

Original-envelope-id:xxxxxx
Reporting-MTA: dns;xxxxx  (tcp-daemon)
Arrival-date: Wed, 17 Jun 2015 10:02:58 +0000 (GMT)

Original-recipient: rfc822;xxxxx
Final-recipient: rfc822;xxxxxx
Action: failed
Status: 5.0.0 (SMTP transmission failure has occurred)
Remote-MTA: dns; mx2.zoho.com  (TCP|17.172.204.151|42220|165.254.168.50|25)
( mx.zohomail.com  SMTP Server ready June 17, 2015 3:03:02 AM PDT)
Diagnostic-code: smtp;559 Message not committed due to internal error



test