DNS Records Confused

Hi everyone,

I have did the transtion from Exchange 2007 to Exchange 2013.
My Exchange 2007 URLS were with mail.mydomain.com and hostname of the exchange 2007 server was  mail.
I came up with Exchange 2013 with hostname mail1

mail  : 192.168.1.10 (Exchange 2007)
mail1 : 192.168.1.15 (Exchange 2013)(all virtual directories i set to mail.mydomain.com)

After decommisioning Exchange 2007 i changed exchange 2013 server to the old ip of Exchange 2007

mail1 192.168.1.10

I created 
A record mail pointing to 192.168.1.10(mail.mydomain.com)? is it right
Now i have two records mail and mail1 pointing to same ip 192.168.1.10

Autodiscover record pointing to 192.168.1.10(autodiscover.mydomain.com)? is it right

should my MX record be pointing to mail or mail1
Should i create an SRV recoard?
Please do guide me ,i am able to open Exchang admin center and owa web pages but i am not able to login.

For outlook or active sync, what should be the incoming and outgoing mail server(mail.mydomain.com or mail1.mydomain.com)
I want to use mail as used earlier with exchange 2007