Setting Domain to use Google Apps Email
Information on setting up Google Apps in H-Sphere can be found at: http://www.google.com/support/a/bin/answer.py?hl=en&answer=61158
Once this is complete, you will want to turn off Mail Service under
Domains -> Domain Settings (after ensuring that any mail you wish to
retain has been either migrated or downloaded off our systems) to avoid
internal e-mail communication issues.
For additional redundancy, you can use the following set of MX servers:
Priority Mail Server
1 ASPMX.L.GOOGLE.COM.
5 ALT1.ASPMX.L.GOOGLE.COM.
5 ALT2.ASPMX.L.GOOGLE.COM.
10 ASPMX2.GOOGLEMAIL.COM.
10 ASPMX3.GOOGLEMAIL.COM.