This seems to happen periodically when they find a hole in our spam filter (that's probably a wholly wrong description of how it works but no doubt JH will put you straight on the matter).
John is working on closing it again but in the meantime can you do exactly what some of you have been doing - report it in the appropriate section or click the report button. If you can provide a link to it even better - sometimes it's hard to find
Sorry for the inconvenience - normal service will resume as soon as possible!
..............Is there such a thing as return to sender 
(thanks)
