Hy Dicky
We had the same thing happen to our account a few weeks back, the e,mails being sent were,nt very nice to say the least. The only thing we could do was to e,mail all our contacts and tell them the situation, luckily most of them understood that we woild,nt be sending that type of e,mail so they had already ignored them. The whole episode lasted about 24 hours and then stopped, we have heard nothing about it since.
Sorry I know that aint much help, the other thing is to contact the provider of your account, we did,nt but as I say, it did stop as quick as it began.
Bosun.