Try this with only one inbound action . Code something like below

1. // Define Caller Details  
2. var callerID = gs.getUser().getRecord();  
3. var sEmailAddress = email.origemail.toLowerCase();  
4.   if (sEmailAddress.indexOf("ithelpdesk@conns.com") != -1) {  
5.   current.assignment_group.setDisplayValue("IT Helpdesk");  
6.   }
7. else if(sEmailAddress.indexOf("security@conns.com") != -1){
8. current.assignment_group.setDisplayValue("IT Securities");  
9. }
   
11. current.caller_id = callerID.getValue('sys_id');  
12. current.location = callerID.getValue('location');  
13. current.u_phone_number = callerID.getValue('phone');  
14. current.contact_type = 'email';  
15.    
16. // Define Incident Details  
17. current.status = 1;  
18. current.short_description = email.subject;  
19. current.description = email.body_text;  
20.    
21. current.insert();