A CRM client has been having a sporadic issue with sending emails from CRM.
Every so often they will receive a message that an email has bounced. Usually
it pertains to relaying was denied.

Relaying denied. IP name possibly forged [70.89.46.173]

They also seem to be having the same issues when sending emails from CRM
that they go directly to the recipients SPAM folder in outlook.

Any thoughts on this?
Thanks,
-Rick M.