Hi, I have a MAC mobileme account and use MAIL 4.2 for all my emails. When sending a group email with addresses concealed (for confidentiality), I am told that the recipients do not receive the email. I do not receive an undelivered reply. However, they do receive the email if I send this to them individually. Please can you shed some light on what might be happening and how I can overcome this problem as some of the groups are fairly large and it's very time consuming without this facility. I don't have this problem if I use my BT connect or other email accounts.

I use an iMac 3.06Ghz Desktop using OS10.5
Netgear Wireless Router 'G'
Apple MAIL 4.2