Trouble sending email from JIRA

Trouble sending email from JIRA

Hi

I've just configured JIRA to use zoho smtp to send our emails. I use my account login/password to login, but I set the sender to a group I belong to.

I think the first one or two emails went through but now I have 5 emails that never arrive and I can see them at this address:

https://mail.zoho.com/cpanel/index.do#troubleshoot/retrymail

In that screen I see the reason:  4.7.0 Temporarily Deferred

If I go and see the headers, I can see this line (among others): X-Zoho-Virus-Status: 1

Also now I'm receiving mails, sometimes in english and sometimes in spanish, saying:


This message was created automatically by mail delivery system. 

THIS IS A WARNING MESSAGE ONLY. 

YOU DO NOT NEED TO RESEND YOUR MESSAGE. 

The original message was received at Tue, 22 Dec 2015 09:49:24 -0800 
from ---@-------- [----@-----------] 

----- The following addresses had fatal errors ----- 
[Status: THROTTLED, Address
 
What is the problem and how can I fix this?