Hi i am open to any Windows or linux related solution as long as i don't have to pay anything extra..
We got one mail server currently running on SBS 2003 with Exchange
So time to time i need to take this server down as for maintenance.
There for I am looking for a solution when the main mail server will be down example for 1 hour, in this 1 hour if any email comes it will store to another mail server, and when our main mail server will be up, all email will be transferred from Backup mail server to primary mail server,
right now i got in my hand :
(a) I have another server (SBS 2008) which is located on a different public ip , If i use 2 mx record , when 1 mx record will go down, email will go to another mx record which is SBS 2008, but I dont know how to sent those emails back to main mail server when main mail server will be up
(b) I am open to any linux base open source solution .
Thanks for your suggestions
Please i would not prefer to pay for this solution . i know you can pay some company for this service which i don't want.