Not RECEIVING any forwarded emails...

I have several email accounts both from my ISP and Microsoft. They are all forwarded to my iCloud email address so I can read them on my iDevices (ipad and iPhone).

Today, I realised I hadn't had any email, which is very strange.

I logged into the Web-mail page of my ISP and also Microsoft and found that there was new mail there, but it simply hadn't been forwarded to iCloud.

My iCloud email address is still receiving mail sent directly to it and I can also send mail from it so iCloud, on the face of it, appears to be working.

I don't believe that both my ISP and Microsoft have the same issue at the same time so I am leaning towards a problem at the iCloud end. Problem is that the Apple service status page says everything is OK (at time of writing this).

Has anyone else notice a problem with mail forwarded TO their iCloud account recently?