Yes I am the same as r44flyer. Had several domains with uk2 for several years and have the emails all redirected to free-online(plusnet).
Tuesday afternon it all stopped , by Wednesday I contacted uk2. They checked all emails were being sent on, but said, on their check, plusnet were blocking all email through uk2. Plus net informed me Postini were the blockers. Certainly this is something new and quite unacceptable. Up to Tuesday postini had done a wonderful job in stopping rubbish email. Now I have had to divert all main email elsewhere and don't know how much has gone missing. It seems very variable as to what gets lost and what is mail delivery failure. My mail through plusnet is at present not reliable. uk2 have told me their technicians are working with plusnet and any further info should be addressed to plusnet. I don't see why those of us with domains and password access only for sending emails through uk2, should be stopped by postini suddenly after several months of trouble free operation.
This is a serious problem and I wish pluusnet, postini and uk2 would sort this mess out very quickly as atop priority.
Let's hope tis is sorted whithin the next few hours!!