SharePoint 2013 calendar List Incoming email settings - Not working.

Hi,

I have configured Incoming email settings of calendar list with email address "documents@SP2013Srv.AD2012.LOC.

SMTP email address  <alias>@SP2013Srv.AD2012.LOC.

When I tried to send mail through my personal email address "siddheshwar@sp2013Srv.com" from outlook but mail wouldn't get deliver. same things work for another email id-"test@SP2013Srv.loc". Any reason for this issue?