Business Mac › Question about Outlook Express

clicking noise when checking for mail Office 2011 for Mac

Macbook Pro using Office 2011 for Home and Business Mac receives clicking noise or chick noise each time outlook checks for mail

I have 1 exchange email and 6 POP accounts and I receive 6 clicks as per the scheduling of checking for mail

If I remove 2 POP accounts I will receive 4 clicks

Thought it was hard drive problem or stabiliser problem when moving so I purchased the new retina 15"

Same problem until I realised it was directly from the POP accounts

Any suggestions would be appreciated

Thanks Bee