Cant recieve MMS from various phones / people

[ac/dc]

Hi All.

My desire will recieve MMS from only certain mobiles. I can send myself MMS.

I have tried the following.

1. Contacted Telstra and they re-sent the MMS settings
2. Done a factory reset on the phone.
3. Tried Handcent

None of the above worked.

I cant recieve MMS from an Iphone, , but I can from other Iphones.
I cant recieve from my wifes HTC Magic
I cant recieve from an old Nokia 6300 m but I did recieve from him with my last phone.

Can anyone help me out ?

thanks in advance.

Craig