Need help RoundCube Sends but will not receive

[Deepa]

Hello,
I am able to receive meassge from other email id, my email sends but does not deliver to the recepient.
I am giving you the delivery event details

Event:   failure error
User:   jinterio
Domain:   jinteriors.co.in
Sender:   [email protected]
Sent Time:   Jan 1, 2016 3:59:15 PM
Sender Host:   localhost
Sender IP Address:   127.0.0.1
Authentication:   localuser
Spam Score:   3.4
Recipient:   [email protected]
Delivery User:   
Delivery Domain:   
Delivered To:   
Router:   lookuphost
Transport:   remote_smtp
Out Time:   Jan 1, 2016 3:59:15 PM
ID:   1aEwxh-002OKb-QS
Delivery Host:   mx2.hotmail.com
Delivery IP Address:   65.55.33.135
Size:   1.04 KB
Result:   25 X=TLSv1.2:ECDHE-RSA-AES256-SHA384:256 CV=yes DN="/CN=*.hotmail.com": SMTP error from remote mail server after end of data: 550 5.7.0 (COL004-MC6F25) Unfortunately, messages from (209.59.146.51) on behalf of (ymail.com) could not be deliv

Plesae help me to resolve this issue as i dont have any idea why this problem arise.
Thanks
Deepa

[Stimpy]

Seems like your SMTP server is not configured correctly. I would guess that you're not using SMTP auth and relaying is not permitted on your server. So check the SMTP-settings

That's basically not a webmail / roundcube problem, rather than a server setup problem.