Best practice in mailbox id usage
Content
Can you help me in understanding the difference between @mailXX.custhelp.com and @custhelp.com.
Is @mailXX.custhelp.com an alias of @custhelp.com mailbox or is it the other way?
Which mailbox id usage is faster (say performance wise)?
There may not be much of difference but would like to understand the best practice in this space.
Thanks in advance.
Regards,
Pavan
Version
November 20150