Hello @tk298 

 

What is the reason for the block? There are several ways to tackle this issue without removing security but you first need to find out the reason for the block? 

 

For example, if you send 200 emails within 5 minutes you are likely to get blocked. All depends, on your organisation email policies. You need to find out what policy is getting triggered. With this information I should be able to help you further.

 

Thanks,

Jose 

www.000webhost.com