Hi All,

Please help me regarding the following scenario I have two domains :

1)DomainA 2) DomainB

1)If user from DomainA wants to send a mail to DomainB , How will send mail Fetch the Info from DNS for name resolution

2)When a mail is sent from Server to Client's Inbox , Will be there a copy of mail as long as mail is not reached to inbox of client, so that in case if doesnt reach it mailbox of client We can retrive the mail back in case if its UDP transfer

What should be the DNS entry in both domain in this scenario

Hoping for reply

regards Amit