my mx record are:
hayeshigginskk.com MX preference = 15, mail exchanger = mail.hayeshigginskk.com
hayeshigginskk.com MX preference = 10, mail exchanger = mail1.eircom.net
here the eircom.net is the priority,and eircom.net is my isp..
when i spoke to mdaemon (mail server) technician about some problem like the email is very slow to get when i send no problem but to receive email it takes 10 to more minutes,also some of the emails are rejected..then he suggest to change my priority to MX preference = 15, mail exchanger = mail.hayeshigginskk.com like this i will have my emails fine..my question is:
if i do this how long will take to be actif?
can i have problem if i change it ?