Email Delays of up to 24 - 48 hours

Email Delays of up to 24 - 48 hours

Hello,

Our company is experiencing delays of receiving email of up to 48 hours.

What could this be?
And how can we correct this?

Thank you for your time.
Robert
Webmaster
American Limousine
310-665-0024

My email: robertscottsingleton@gmail.com