iCloud blocking my ISP
When I send an email from my ISP's mail server to an iCloud recipient it does not arrive. Nor do I get a bounce. My Mac expert friend and I have tested and proved this to be the case. Emails sent from my iCloud to his iCloud get trough but not when sent from my ISP's Mail Server. I seems that iCloud is blocking it. My ISP's tech support say this an Apple problem and also say Apple will not deal with them hence my post here.
iMac, OS X Mountain Lion (10.8.2)